diff --git a/c++/greptime/v1/region/server.pb.cc b/c++/greptime/v1/region/server.pb.cc
index 3ef46b44..cf1f4047 100644
--- a/c++/greptime/v1/region/server.pb.cc
+++ b/c++/greptime/v1/region/server.pb.cc
@@ -323,19 +323,6 @@ struct DropColumnsDefaultTypeInternal {
   };
 };
 PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 DropColumnsDefaultTypeInternal _DropColumns_default_instance_;
-PROTOBUF_CONSTEXPR ChangeColumnTypes::ChangeColumnTypes(
-    ::_pbi::ConstantInitialized): _impl_{
-    /*decltype(_impl_.change_column_types_)*/{}
-  , /*decltype(_impl_._cached_size_)*/{}} {}
-struct ChangeColumnTypesDefaultTypeInternal {
-  PROTOBUF_CONSTEXPR ChangeColumnTypesDefaultTypeInternal()
-      : _instance(::_pbi::ConstantInitialized{}) {}
-  ~ChangeColumnTypesDefaultTypeInternal() {}
-  union {
-    ChangeColumnTypes _instance;
-  };
-};
-PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ChangeColumnTypesDefaultTypeInternal _ChangeColumnTypes_default_instance_;
 PROTOBUF_CONSTEXPR AddColumn::AddColumn(
     ::_pbi::ConstantInitialized): _impl_{
     /*decltype(_impl_.column_def_)*/nullptr
@@ -350,21 +337,6 @@ struct AddColumnDefaultTypeInternal {
   };
 };
 PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 AddColumnDefaultTypeInternal _AddColumn_default_instance_;
-PROTOBUF_CONSTEXPR ChangeColumnType::ChangeColumnType(
-    ::_pbi::ConstantInitialized): _impl_{
-    /*decltype(_impl_.column_name_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
-  , /*decltype(_impl_.target_type_extension_)*/nullptr
-  , /*decltype(_impl_.target_type_)*/0
-  , /*decltype(_impl_._cached_size_)*/{}} {}
-struct ChangeColumnTypeDefaultTypeInternal {
-  PROTOBUF_CONSTEXPR ChangeColumnTypeDefaultTypeInternal()
-      : _instance(::_pbi::ConstantInitialized{}) {}
-  ~ChangeColumnTypeDefaultTypeInternal() {}
-  union {
-    ChangeColumnType _instance;
-  };
-};
-PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ChangeColumnTypeDefaultTypeInternal _ChangeColumnType_default_instance_;
 PROTOBUF_CONSTEXPR DropColumn::DropColumn(
     ::_pbi::ConstantInitialized): _impl_{
     /*decltype(_impl_.name_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
@@ -434,7 +406,7 @@ PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORIT
 }  // namespace region
 }  // namespace v1
 }  // namespace greptime
-static ::_pb::Metadata file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[30];
+static ::_pb::Metadata file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[28];
 static constexpr ::_pb::EnumDescriptor const** file_level_enum_descriptors_greptime_2fv1_2fregion_2fserver_2eproto = nullptr;
 static constexpr ::_pb::ServiceDescriptor const** file_level_service_descriptors_greptime_2fv1_2fregion_2fserver_2eproto = nullptr;
 
@@ -641,13 +613,6 @@ const uint32_t TableStruct_greptime_2fv1_2fregion_2fserver_2eproto::offsets[] PR
   ~0u,  // no _inlined_string_donated_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::region::DropColumns, _impl_.drop_columns_),
   ~0u,  // no _has_bits_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::region::ChangeColumnTypes, _internal_metadata_),
-  ~0u,  // no _extensions_
-  ~0u,  // no _oneof_case_
-  ~0u,  // no _weak_field_map_
-  ~0u,  // no _inlined_string_donated_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::region::ChangeColumnTypes, _impl_.change_column_types_),
-  ~0u,  // no _has_bits_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::region::AddColumn, _internal_metadata_),
   ~0u,  // no _extensions_
   ~0u,  // no _oneof_case_
@@ -656,15 +621,6 @@ const uint32_t TableStruct_greptime_2fv1_2fregion_2fserver_2eproto::offsets[] PR
   PROTOBUF_FIELD_OFFSET(::greptime::v1::region::AddColumn, _impl_.column_def_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::region::AddColumn, _impl_.location_),
   ~0u,  // no _has_bits_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::region::ChangeColumnType, _internal_metadata_),
-  ~0u,  // no _extensions_
-  ~0u,  // no _oneof_case_
-  ~0u,  // no _weak_field_map_
-  ~0u,  // no _inlined_string_donated_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::region::ChangeColumnType, _impl_.column_name_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::region::ChangeColumnType, _impl_.target_type_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::region::ChangeColumnType, _impl_.target_type_extension_),
-  ~0u,  // no _has_bits_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::region::DropColumn, _internal_metadata_),
   ~0u,  // no _extensions_
   ~0u,  // no _oneof_case_
@@ -724,14 +680,12 @@ static const ::_pbi::MigrationSchema schemas[] PROTOBUF_SECTION_VARIABLE(protode
   { 175, -1, -1, sizeof(::greptime::v1::region::AlterRequest)},
   { 187, -1, -1, sizeof(::greptime::v1::region::AddColumns)},
   { 194, -1, -1, sizeof(::greptime::v1::region::DropColumns)},
-  { 201, -1, -1, sizeof(::greptime::v1::region::ChangeColumnTypes)},
-  { 208, -1, -1, sizeof(::greptime::v1::region::AddColumn)},
-  { 216, -1, -1, sizeof(::greptime::v1::region::ChangeColumnType)},
-  { 225, -1, -1, sizeof(::greptime::v1::region::DropColumn)},
-  { 232, -1, -1, sizeof(::greptime::v1::region::FlushRequest)},
-  { 239, -1, -1, sizeof(::greptime::v1::region::CompactRequest)},
-  { 246, -1, -1, sizeof(::greptime::v1::region::TruncateRequest)},
-  { 253, -1, -1, sizeof(::greptime::v1::region::RegionColumnDef)},
+  { 201, -1, -1, sizeof(::greptime::v1::region::AddColumn)},
+  { 209, -1, -1, sizeof(::greptime::v1::region::DropColumn)},
+  { 216, -1, -1, sizeof(::greptime::v1::region::FlushRequest)},
+  { 223, -1, -1, sizeof(::greptime::v1::region::CompactRequest)},
+  { 230, -1, -1, sizeof(::greptime::v1::region::TruncateRequest)},
+  { 237, -1, -1, sizeof(::greptime::v1::region::RegionColumnDef)},
 };
 
 static const ::_pb::Message* const file_default_instances[] = {
@@ -757,9 +711,7 @@ static const ::_pb::Message* const file_default_instances[] = {
   &::greptime::v1::region::_AlterRequest_default_instance_._instance,
   &::greptime::v1::region::_AddColumns_default_instance_._instance,
   &::greptime::v1::region::_DropColumns_default_instance_._instance,
-  &::greptime::v1::region::_ChangeColumnTypes_default_instance_._instance,
   &::greptime::v1::region::_AddColumn_default_instance_._instance,
-  &::greptime::v1::region::_ChangeColumnType_default_instance_._instance,
   &::greptime::v1::region::_DropColumn_default_instance_._instance,
   &::greptime::v1::region::_FlushRequest_default_instance_._instance,
   &::greptime::v1::region::_CompactRequest_default_instance_._instance,
@@ -827,37 +779,30 @@ const char descriptor_table_protodef_greptime_2fv1_2fregion_2fserver_2eproto[] P
   "ntry\032.\n\014OptionsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005val"
   "ue\030\002 \001(\t:\0028\001\"!\n\014CloseRequest\022\021\n\tregion_i"
   "d\030\001 \001(\004\"C\n\rAlterRequests\0222\n\010requests\030\001 \003"
-  "(\0132 .greptime.v1.region.AlterRequest\"\367\001\n"
+  "(\0132 .greptime.v1.region.AlterRequest\"\360\001\n"
   "\014AlterRequest\022\021\n\tregion_id\030\001 \001(\004\0225\n\013add_"
   "columns\030\002 \001(\0132\036.greptime.v1.region.AddCo"
   "lumnsH\000\0227\n\014drop_columns\030\003 \001(\0132\037.greptime"
-  ".v1.region.DropColumnsH\000\022D\n\023change_colum"
-  "n_types\030\005 \001(\0132%.greptime.v1.region.Chang"
-  "eColumnTypesH\000\022\026\n\016schema_version\030\004 \001(\004B\006"
-  "\n\004kind\"@\n\nAddColumns\0222\n\013add_columns\030\001 \003("
-  "\0132\035.greptime.v1.region.AddColumn\"C\n\013Drop"
-  "Columns\0224\n\014drop_columns\030\001 \003(\0132\036.greptime"
-  ".v1.region.DropColumn\"V\n\021ChangeColumnTyp"
-  "es\022A\n\023change_column_types\030\001 \003(\0132$.grepti"
-  "me.v1.region.ChangeColumnType\"v\n\tAddColu"
-  "mn\0227\n\ncolumn_def\030\001 \001(\0132#.greptime.v1.reg"
-  "ion.RegionColumnDef\0220\n\010location\030\003 \001(\0132\036."
-  "greptime.v1.AddColumnLocation\"\236\001\n\020Change"
-  "ColumnType\022\023\n\013column_name\030\001 \001(\t\0220\n\013targe"
-  "t_type\030\002 \001(\0162\033.greptime.v1.ColumnDataTyp"
-  "e\022C\n\025target_type_extension\030\003 \001(\0132$.grept"
-  "ime.v1.ColumnDataTypeExtension\"\032\n\nDropCo"
-  "lumn\022\014\n\004name\030\001 \001(\t\"!\n\014FlushRequest\022\021\n\tre"
-  "gion_id\030\001 \001(\004\"#\n\016CompactRequest\022\021\n\tregio"
-  "n_id\030\001 \001(\004\"$\n\017TruncateRequest\022\021\n\tregion_"
-  "id\030\001 \001(\004\"P\n\017RegionColumnDef\022*\n\ncolumn_de"
-  "f\030\001 \001(\0132\026.greptime.v1.ColumnDef\022\021\n\tcolum"
-  "n_id\030\002 \001(\r2Y\n\006Region\022O\n\006Handle\022!.greptim"
-  "e.v1.region.RegionRequest\032\".greptime.v1."
-  "region.RegionResponseB]\n\025io.greptime.v1."
-  "regionB\006ServerZ<github.com/GreptimeTeam/"
-  "greptime-proto/go/greptime/v1/regionb\006pr"
-  "oto3"
+  ".v1.region.DropColumnsH\000\022=\n\023change_colum"
+  "n_types\030\005 \001(\0132\036.greptime.v1.ChangeColumn"
+  "TypesH\000\022\026\n\016schema_version\030\004 \001(\004B\006\n\004kind\""
+  "@\n\nAddColumns\0222\n\013add_columns\030\001 \003(\0132\035.gre"
+  "ptime.v1.region.AddColumn\"C\n\013DropColumns"
+  "\0224\n\014drop_columns\030\001 \003(\0132\036.greptime.v1.reg"
+  "ion.DropColumn\"v\n\tAddColumn\0227\n\ncolumn_de"
+  "f\030\001 \001(\0132#.greptime.v1.region.RegionColum"
+  "nDef\0220\n\010location\030\003 \001(\0132\036.greptime.v1.Add"
+  "ColumnLocation\"\032\n\nDropColumn\022\014\n\004name\030\001 \001"
+  "(\t\"!\n\014FlushRequest\022\021\n\tregion_id\030\001 \001(\004\"#\n"
+  "\016CompactRequest\022\021\n\tregion_id\030\001 \001(\004\"$\n\017Tr"
+  "uncateRequest\022\021\n\tregion_id\030\001 \001(\004\"P\n\017Regi"
+  "onColumnDef\022*\n\ncolumn_def\030\001 \001(\0132\026.grepti"
+  "me.v1.ColumnDef\022\021\n\tcolumn_id\030\002 \001(\r2Y\n\006Re"
+  "gion\022O\n\006Handle\022!.greptime.v1.region.Regi"
+  "onRequest\032\".greptime.v1.region.RegionRes"
+  "ponseB]\n\025io.greptime.v1.regionB\006ServerZ<"
+  "github.com/GreptimeTeam/greptime-proto/g"
+  "o/greptime/v1/regionb\006proto3"
   ;
 static const ::_pbi::DescriptorTable* const descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_deps[3] = {
   &::descriptor_table_greptime_2fv1_2fcommon_2eproto,
@@ -866,9 +811,9 @@ static const ::_pbi::DescriptorTable* const descriptor_table_greptime_2fv1_2freg
 };
 static ::_pbi::once_flag descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_once;
 const ::_pbi::DescriptorTable descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto = {
-    false, false, 3564, descriptor_table_protodef_greptime_2fv1_2fregion_2fserver_2eproto,
+    false, false, 3308, descriptor_table_protodef_greptime_2fv1_2fregion_2fserver_2eproto,
     "greptime/v1/region/server.proto",
-    &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_once, descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_deps, 3, 30,
+    &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_once, descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_deps, 3, 28,
     schemas, file_default_instances, TableStruct_greptime_2fv1_2fregion_2fserver_2eproto::offsets,
     file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto, file_level_enum_descriptors_greptime_2fv1_2fregion_2fserver_2eproto,
     file_level_service_descriptors_greptime_2fv1_2fregion_2fserver_2eproto,
@@ -5329,7 +5274,7 @@ class AlterRequest::_Internal {
  public:
   static const ::greptime::v1::region::AddColumns& add_columns(const AlterRequest* msg);
   static const ::greptime::v1::region::DropColumns& drop_columns(const AlterRequest* msg);
-  static const ::greptime::v1::region::ChangeColumnTypes& change_column_types(const AlterRequest* msg);
+  static const ::greptime::v1::ChangeColumnTypes& change_column_types(const AlterRequest* msg);
 };
 
 const ::greptime::v1::region::AddColumns&
@@ -5340,7 +5285,7 @@ const ::greptime::v1::region::DropColumns&
 AlterRequest::_Internal::drop_columns(const AlterRequest* msg) {
   return *msg->_impl_.kind_.drop_columns_;
 }
-const ::greptime::v1::region::ChangeColumnTypes&
+const ::greptime::v1::ChangeColumnTypes&
 AlterRequest::_Internal::change_column_types(const AlterRequest* msg) {
   return *msg->_impl_.kind_.change_column_types_;
 }
@@ -5374,12 +5319,13 @@ void AlterRequest::set_allocated_drop_columns(::greptime::v1::region::DropColumn
   }
   // @@protoc_insertion_point(field_set_allocated:greptime.v1.region.AlterRequest.drop_columns)
 }
-void AlterRequest::set_allocated_change_column_types(::greptime::v1::region::ChangeColumnTypes* change_column_types) {
+void AlterRequest::set_allocated_change_column_types(::greptime::v1::ChangeColumnTypes* change_column_types) {
   ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
   clear_kind();
   if (change_column_types) {
     ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
-      ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(change_column_types);
+        ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(
+                reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(change_column_types));
     if (message_arena != submessage_arena) {
       change_column_types = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
           message_arena, change_column_types, submessage_arena);
@@ -5389,6 +5335,14 @@ void AlterRequest::set_allocated_change_column_types(::greptime::v1::region::Cha
   }
   // @@protoc_insertion_point(field_set_allocated:greptime.v1.region.AlterRequest.change_column_types)
 }
+void AlterRequest::clear_change_column_types() {
+  if (_internal_has_change_column_types()) {
+    if (GetArenaForAllocation() == nullptr) {
+      delete _impl_.kind_.change_column_types_;
+    }
+    clear_has_kind();
+  }
+}
 AlterRequest::AlterRequest(::PROTOBUF_NAMESPACE_ID::Arena* arena,
                          bool is_message_owned)
   : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
@@ -5422,7 +5376,7 @@ AlterRequest::AlterRequest(const AlterRequest& from)
       break;
     }
     case kChangeColumnTypes: {
-      _this->_internal_mutable_change_column_types()->::greptime::v1::region::ChangeColumnTypes::MergeFrom(
+      _this->_internal_mutable_change_column_types()->::greptime::v1::ChangeColumnTypes::MergeFrom(
           from._internal_change_column_types());
       break;
     }
@@ -5547,7 +5501,7 @@ const char* AlterRequest::_InternalParse(const char* ptr, ::_pbi::ParseContext*
         } else
           goto handle_unusual;
         continue;
-      // .greptime.v1.region.ChangeColumnTypes change_column_types = 5;
+      // .greptime.v1.ChangeColumnTypes change_column_types = 5;
       case 5:
         if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 42)) {
           ptr = ctx->ParseMessage(_internal_mutable_change_column_types(), ptr);
@@ -5610,7 +5564,7 @@ uint8_t* AlterRequest::_InternalSerialize(
     target = ::_pbi::WireFormatLite::WriteUInt64ToArray(4, this->_internal_schema_version(), target);
   }
 
-  // .greptime.v1.region.ChangeColumnTypes change_column_types = 5;
+  // .greptime.v1.ChangeColumnTypes change_column_types = 5;
   if (_internal_has_change_column_types()) {
     target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
       InternalWriteMessage(5, _Internal::change_column_types(this),
@@ -5658,7 +5612,7 @@ size_t AlterRequest::ByteSizeLong() const {
           *_impl_.kind_.drop_columns_);
       break;
     }
-    // .greptime.v1.region.ChangeColumnTypes change_column_types = 5;
+    // .greptime.v1.ChangeColumnTypes change_column_types = 5;
     case kChangeColumnTypes: {
       total_size += 1 +
         ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
@@ -5705,7 +5659,7 @@ void AlterRequest::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::P
       break;
     }
     case kChangeColumnTypes: {
-      _this->_internal_mutable_change_column_types()->::greptime::v1::region::ChangeColumnTypes::MergeFrom(
+      _this->_internal_mutable_change_column_types()->::greptime::v1::ChangeColumnTypes::MergeFrom(
           from._internal_change_column_types());
       break;
     }
@@ -6118,191 +6072,6 @@ ::PROTOBUF_NAMESPACE_ID::Metadata DropColumns::GetMetadata() const {
 
 // ===================================================================
 
-class ChangeColumnTypes::_Internal {
- public:
-};
-
-ChangeColumnTypes::ChangeColumnTypes(::PROTOBUF_NAMESPACE_ID::Arena* arena,
-                         bool is_message_owned)
-  : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
-  SharedCtor(arena, is_message_owned);
-  // @@protoc_insertion_point(arena_constructor:greptime.v1.region.ChangeColumnTypes)
-}
-ChangeColumnTypes::ChangeColumnTypes(const ChangeColumnTypes& from)
-  : ::PROTOBUF_NAMESPACE_ID::Message() {
-  ChangeColumnTypes* const _this = this; (void)_this;
-  new (&_impl_) Impl_{
-      decltype(_impl_.change_column_types_){from._impl_.change_column_types_}
-    , /*decltype(_impl_._cached_size_)*/{}};
-
-  _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
-  // @@protoc_insertion_point(copy_constructor:greptime.v1.region.ChangeColumnTypes)
-}
-
-inline void ChangeColumnTypes::SharedCtor(
-    ::_pb::Arena* arena, bool is_message_owned) {
-  (void)arena;
-  (void)is_message_owned;
-  new (&_impl_) Impl_{
-      decltype(_impl_.change_column_types_){arena}
-    , /*decltype(_impl_._cached_size_)*/{}
-  };
-}
-
-ChangeColumnTypes::~ChangeColumnTypes() {
-  // @@protoc_insertion_point(destructor:greptime.v1.region.ChangeColumnTypes)
-  if (auto *arena = _internal_metadata_.DeleteReturnArena<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>()) {
-  (void)arena;
-    return;
-  }
-  SharedDtor();
-}
-
-inline void ChangeColumnTypes::SharedDtor() {
-  GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
-  _impl_.change_column_types_.~RepeatedPtrField();
-}
-
-void ChangeColumnTypes::SetCachedSize(int size) const {
-  _impl_._cached_size_.Set(size);
-}
-
-void ChangeColumnTypes::Clear() {
-// @@protoc_insertion_point(message_clear_start:greptime.v1.region.ChangeColumnTypes)
-  uint32_t cached_has_bits = 0;
-  // Prevent compiler warnings about cached_has_bits being unused
-  (void) cached_has_bits;
-
-  _impl_.change_column_types_.Clear();
-  _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
-}
-
-const char* ChangeColumnTypes::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
-#define CHK_(x) if (PROTOBUF_PREDICT_FALSE(!(x))) goto failure
-  while (!ctx->Done(&ptr)) {
-    uint32_t tag;
-    ptr = ::_pbi::ReadTag(ptr, &tag);
-    switch (tag >> 3) {
-      // repeated .greptime.v1.region.ChangeColumnType change_column_types = 1;
-      case 1:
-        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 10)) {
-          ptr -= 1;
-          do {
-            ptr += 1;
-            ptr = ctx->ParseMessage(_internal_add_change_column_types(), ptr);
-            CHK_(ptr);
-            if (!ctx->DataAvailable(ptr)) break;
-          } while (::PROTOBUF_NAMESPACE_ID::internal::ExpectTag<10>(ptr));
-        } else
-          goto handle_unusual;
-        continue;
-      default:
-        goto handle_unusual;
-    }  // switch
-  handle_unusual:
-    if ((tag == 0) || ((tag & 7) == 4)) {
-      CHK_(ptr);
-      ctx->SetLastTag(tag);
-      goto message_done;
-    }
-    ptr = UnknownFieldParse(
-        tag,
-        _internal_metadata_.mutable_unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(),
-        ptr, ctx);
-    CHK_(ptr != nullptr);
-  }  // while
-message_done:
-  return ptr;
-failure:
-  ptr = nullptr;
-  goto message_done;
-#undef CHK_
-}
-
-uint8_t* ChangeColumnTypes::_InternalSerialize(
-    uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const {
-  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.region.ChangeColumnTypes)
-  uint32_t cached_has_bits = 0;
-  (void) cached_has_bits;
-
-  // repeated .greptime.v1.region.ChangeColumnType change_column_types = 1;
-  for (unsigned i = 0,
-      n = static_cast<unsigned>(this->_internal_change_column_types_size()); i < n; i++) {
-    const auto& repfield = this->_internal_change_column_types(i);
-    target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
-        InternalWriteMessage(1, repfield, repfield.GetCachedSize(), target, stream);
-  }
-
-  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
-    target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
-        _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
-  }
-  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.region.ChangeColumnTypes)
-  return target;
-}
-
-size_t ChangeColumnTypes::ByteSizeLong() const {
-// @@protoc_insertion_point(message_byte_size_start:greptime.v1.region.ChangeColumnTypes)
-  size_t total_size = 0;
-
-  uint32_t cached_has_bits = 0;
-  // Prevent compiler warnings about cached_has_bits being unused
-  (void) cached_has_bits;
-
-  // repeated .greptime.v1.region.ChangeColumnType change_column_types = 1;
-  total_size += 1UL * this->_internal_change_column_types_size();
-  for (const auto& msg : this->_impl_.change_column_types_) {
-    total_size +=
-      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(msg);
-  }
-
-  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
-}
-
-const ::PROTOBUF_NAMESPACE_ID::Message::ClassData ChangeColumnTypes::_class_data_ = {
-    ::PROTOBUF_NAMESPACE_ID::Message::CopyWithSourceCheck,
-    ChangeColumnTypes::MergeImpl
-};
-const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*ChangeColumnTypes::GetClassData() const { return &_class_data_; }
-
-
-void ChangeColumnTypes::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
-  auto* const _this = static_cast<ChangeColumnTypes*>(&to_msg);
-  auto& from = static_cast<const ChangeColumnTypes&>(from_msg);
-  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.region.ChangeColumnTypes)
-  GOOGLE_DCHECK_NE(&from, _this);
-  uint32_t cached_has_bits = 0;
-  (void) cached_has_bits;
-
-  _this->_impl_.change_column_types_.MergeFrom(from._impl_.change_column_types_);
-  _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
-}
-
-void ChangeColumnTypes::CopyFrom(const ChangeColumnTypes& from) {
-// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.region.ChangeColumnTypes)
-  if (&from == this) return;
-  Clear();
-  MergeFrom(from);
-}
-
-bool ChangeColumnTypes::IsInitialized() const {
-  return true;
-}
-
-void ChangeColumnTypes::InternalSwap(ChangeColumnTypes* other) {
-  using std::swap;
-  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
-  _impl_.change_column_types_.InternalSwap(&other->_impl_.change_column_types_);
-}
-
-::PROTOBUF_NAMESPACE_ID::Metadata ChangeColumnTypes::GetMetadata() const {
-  return ::_pbi::AssignDescriptors(
-      &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_getter, &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[22]);
-}
-
-// ===================================================================
-
 class AddColumn::_Internal {
  public:
   static const ::greptime::v1::region::RegionColumnDef& column_def(const AddColumn* msg);
@@ -6543,292 +6312,7 @@ void AddColumn::InternalSwap(AddColumn* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata AddColumn::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_getter, &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[23]);
-}
-
-// ===================================================================
-
-class ChangeColumnType::_Internal {
- public:
-  static const ::greptime::v1::ColumnDataTypeExtension& target_type_extension(const ChangeColumnType* msg);
-};
-
-const ::greptime::v1::ColumnDataTypeExtension&
-ChangeColumnType::_Internal::target_type_extension(const ChangeColumnType* msg) {
-  return *msg->_impl_.target_type_extension_;
-}
-void ChangeColumnType::clear_target_type_extension() {
-  if (GetArenaForAllocation() == nullptr && _impl_.target_type_extension_ != nullptr) {
-    delete _impl_.target_type_extension_;
-  }
-  _impl_.target_type_extension_ = nullptr;
-}
-ChangeColumnType::ChangeColumnType(::PROTOBUF_NAMESPACE_ID::Arena* arena,
-                         bool is_message_owned)
-  : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
-  SharedCtor(arena, is_message_owned);
-  // @@protoc_insertion_point(arena_constructor:greptime.v1.region.ChangeColumnType)
-}
-ChangeColumnType::ChangeColumnType(const ChangeColumnType& from)
-  : ::PROTOBUF_NAMESPACE_ID::Message() {
-  ChangeColumnType* const _this = this; (void)_this;
-  new (&_impl_) Impl_{
-      decltype(_impl_.column_name_){}
-    , decltype(_impl_.target_type_extension_){nullptr}
-    , decltype(_impl_.target_type_){}
-    , /*decltype(_impl_._cached_size_)*/{}};
-
-  _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
-  _impl_.column_name_.InitDefault();
-  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-    _impl_.column_name_.Set("", GetArenaForAllocation());
-  #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  if (!from._internal_column_name().empty()) {
-    _this->_impl_.column_name_.Set(from._internal_column_name(), 
-      _this->GetArenaForAllocation());
-  }
-  if (from._internal_has_target_type_extension()) {
-    _this->_impl_.target_type_extension_ = new ::greptime::v1::ColumnDataTypeExtension(*from._impl_.target_type_extension_);
-  }
-  _this->_impl_.target_type_ = from._impl_.target_type_;
-  // @@protoc_insertion_point(copy_constructor:greptime.v1.region.ChangeColumnType)
-}
-
-inline void ChangeColumnType::SharedCtor(
-    ::_pb::Arena* arena, bool is_message_owned) {
-  (void)arena;
-  (void)is_message_owned;
-  new (&_impl_) Impl_{
-      decltype(_impl_.column_name_){}
-    , decltype(_impl_.target_type_extension_){nullptr}
-    , decltype(_impl_.target_type_){0}
-    , /*decltype(_impl_._cached_size_)*/{}
-  };
-  _impl_.column_name_.InitDefault();
-  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-    _impl_.column_name_.Set("", GetArenaForAllocation());
-  #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-}
-
-ChangeColumnType::~ChangeColumnType() {
-  // @@protoc_insertion_point(destructor:greptime.v1.region.ChangeColumnType)
-  if (auto *arena = _internal_metadata_.DeleteReturnArena<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>()) {
-  (void)arena;
-    return;
-  }
-  SharedDtor();
-}
-
-inline void ChangeColumnType::SharedDtor() {
-  GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
-  _impl_.column_name_.Destroy();
-  if (this != internal_default_instance()) delete _impl_.target_type_extension_;
-}
-
-void ChangeColumnType::SetCachedSize(int size) const {
-  _impl_._cached_size_.Set(size);
-}
-
-void ChangeColumnType::Clear() {
-// @@protoc_insertion_point(message_clear_start:greptime.v1.region.ChangeColumnType)
-  uint32_t cached_has_bits = 0;
-  // Prevent compiler warnings about cached_has_bits being unused
-  (void) cached_has_bits;
-
-  _impl_.column_name_.ClearToEmpty();
-  if (GetArenaForAllocation() == nullptr && _impl_.target_type_extension_ != nullptr) {
-    delete _impl_.target_type_extension_;
-  }
-  _impl_.target_type_extension_ = nullptr;
-  _impl_.target_type_ = 0;
-  _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
-}
-
-const char* ChangeColumnType::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
-#define CHK_(x) if (PROTOBUF_PREDICT_FALSE(!(x))) goto failure
-  while (!ctx->Done(&ptr)) {
-    uint32_t tag;
-    ptr = ::_pbi::ReadTag(ptr, &tag);
-    switch (tag >> 3) {
-      // string column_name = 1;
-      case 1:
-        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 10)) {
-          auto str = _internal_mutable_column_name();
-          ptr = ::_pbi::InlineGreedyStringParser(str, ptr, ctx);
-          CHK_(ptr);
-          CHK_(::_pbi::VerifyUTF8(str, "greptime.v1.region.ChangeColumnType.column_name"));
-        } else
-          goto handle_unusual;
-        continue;
-      // .greptime.v1.ColumnDataType target_type = 2;
-      case 2:
-        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 16)) {
-          uint64_t val = ::PROTOBUF_NAMESPACE_ID::internal::ReadVarint64(&ptr);
-          CHK_(ptr);
-          _internal_set_target_type(static_cast<::greptime::v1::ColumnDataType>(val));
-        } else
-          goto handle_unusual;
-        continue;
-      // .greptime.v1.ColumnDataTypeExtension target_type_extension = 3;
-      case 3:
-        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 26)) {
-          ptr = ctx->ParseMessage(_internal_mutable_target_type_extension(), ptr);
-          CHK_(ptr);
-        } else
-          goto handle_unusual;
-        continue;
-      default:
-        goto handle_unusual;
-    }  // switch
-  handle_unusual:
-    if ((tag == 0) || ((tag & 7) == 4)) {
-      CHK_(ptr);
-      ctx->SetLastTag(tag);
-      goto message_done;
-    }
-    ptr = UnknownFieldParse(
-        tag,
-        _internal_metadata_.mutable_unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(),
-        ptr, ctx);
-    CHK_(ptr != nullptr);
-  }  // while
-message_done:
-  return ptr;
-failure:
-  ptr = nullptr;
-  goto message_done;
-#undef CHK_
-}
-
-uint8_t* ChangeColumnType::_InternalSerialize(
-    uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const {
-  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.region.ChangeColumnType)
-  uint32_t cached_has_bits = 0;
-  (void) cached_has_bits;
-
-  // string column_name = 1;
-  if (!this->_internal_column_name().empty()) {
-    ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(
-      this->_internal_column_name().data(), static_cast<int>(this->_internal_column_name().length()),
-      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::SERIALIZE,
-      "greptime.v1.region.ChangeColumnType.column_name");
-    target = stream->WriteStringMaybeAliased(
-        1, this->_internal_column_name(), target);
-  }
-
-  // .greptime.v1.ColumnDataType target_type = 2;
-  if (this->_internal_target_type() != 0) {
-    target = stream->EnsureSpace(target);
-    target = ::_pbi::WireFormatLite::WriteEnumToArray(
-      2, this->_internal_target_type(), target);
-  }
-
-  // .greptime.v1.ColumnDataTypeExtension target_type_extension = 3;
-  if (this->_internal_has_target_type_extension()) {
-    target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
-      InternalWriteMessage(3, _Internal::target_type_extension(this),
-        _Internal::target_type_extension(this).GetCachedSize(), target, stream);
-  }
-
-  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
-    target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
-        _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
-  }
-  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.region.ChangeColumnType)
-  return target;
-}
-
-size_t ChangeColumnType::ByteSizeLong() const {
-// @@protoc_insertion_point(message_byte_size_start:greptime.v1.region.ChangeColumnType)
-  size_t total_size = 0;
-
-  uint32_t cached_has_bits = 0;
-  // Prevent compiler warnings about cached_has_bits being unused
-  (void) cached_has_bits;
-
-  // string column_name = 1;
-  if (!this->_internal_column_name().empty()) {
-    total_size += 1 +
-      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::StringSize(
-        this->_internal_column_name());
-  }
-
-  // .greptime.v1.ColumnDataTypeExtension target_type_extension = 3;
-  if (this->_internal_has_target_type_extension()) {
-    total_size += 1 +
-      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
-        *_impl_.target_type_extension_);
-  }
-
-  // .greptime.v1.ColumnDataType target_type = 2;
-  if (this->_internal_target_type() != 0) {
-    total_size += 1 +
-      ::_pbi::WireFormatLite::EnumSize(this->_internal_target_type());
-  }
-
-  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
-}
-
-const ::PROTOBUF_NAMESPACE_ID::Message::ClassData ChangeColumnType::_class_data_ = {
-    ::PROTOBUF_NAMESPACE_ID::Message::CopyWithSourceCheck,
-    ChangeColumnType::MergeImpl
-};
-const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*ChangeColumnType::GetClassData() const { return &_class_data_; }
-
-
-void ChangeColumnType::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
-  auto* const _this = static_cast<ChangeColumnType*>(&to_msg);
-  auto& from = static_cast<const ChangeColumnType&>(from_msg);
-  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.region.ChangeColumnType)
-  GOOGLE_DCHECK_NE(&from, _this);
-  uint32_t cached_has_bits = 0;
-  (void) cached_has_bits;
-
-  if (!from._internal_column_name().empty()) {
-    _this->_internal_set_column_name(from._internal_column_name());
-  }
-  if (from._internal_has_target_type_extension()) {
-    _this->_internal_mutable_target_type_extension()->::greptime::v1::ColumnDataTypeExtension::MergeFrom(
-        from._internal_target_type_extension());
-  }
-  if (from._internal_target_type() != 0) {
-    _this->_internal_set_target_type(from._internal_target_type());
-  }
-  _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
-}
-
-void ChangeColumnType::CopyFrom(const ChangeColumnType& from) {
-// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.region.ChangeColumnType)
-  if (&from == this) return;
-  Clear();
-  MergeFrom(from);
-}
-
-bool ChangeColumnType::IsInitialized() const {
-  return true;
-}
-
-void ChangeColumnType::InternalSwap(ChangeColumnType* other) {
-  using std::swap;
-  auto* lhs_arena = GetArenaForAllocation();
-  auto* rhs_arena = other->GetArenaForAllocation();
-  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
-  ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::InternalSwap(
-      &_impl_.column_name_, lhs_arena,
-      &other->_impl_.column_name_, rhs_arena
-  );
-  ::PROTOBUF_NAMESPACE_ID::internal::memswap<
-      PROTOBUF_FIELD_OFFSET(ChangeColumnType, _impl_.target_type_)
-      + sizeof(ChangeColumnType::_impl_.target_type_)
-      - PROTOBUF_FIELD_OFFSET(ChangeColumnType, _impl_.target_type_extension_)>(
-          reinterpret_cast<char*>(&_impl_.target_type_extension_),
-          reinterpret_cast<char*>(&other->_impl_.target_type_extension_));
-}
-
-::PROTOBUF_NAMESPACE_ID::Metadata ChangeColumnType::GetMetadata() const {
-  return ::_pbi::AssignDescriptors(
-      &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_getter, &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[24]);
+      file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[22]);
 }
 
 // ===================================================================
@@ -7031,7 +6515,7 @@ void DropColumn::InternalSwap(DropColumn* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata DropColumn::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_getter, &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[25]);
+      file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[23]);
 }
 
 // ===================================================================
@@ -7209,7 +6693,7 @@ void FlushRequest::InternalSwap(FlushRequest* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata FlushRequest::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_getter, &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[26]);
+      file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[24]);
 }
 
 // ===================================================================
@@ -7387,7 +6871,7 @@ void CompactRequest::InternalSwap(CompactRequest* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata CompactRequest::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_getter, &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[27]);
+      file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[25]);
 }
 
 // ===================================================================
@@ -7565,7 +7049,7 @@ void TruncateRequest::InternalSwap(TruncateRequest* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata TruncateRequest::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_getter, &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[28]);
+      file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[26]);
 }
 
 // ===================================================================
@@ -7795,7 +7279,7 @@ void RegionColumnDef::InternalSwap(RegionColumnDef* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata RegionColumnDef::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_getter, &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[29]);
+      file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[27]);
 }
 
 // @@protoc_insertion_point(namespace_scope)
@@ -7891,18 +7375,10 @@ template<> PROTOBUF_NOINLINE ::greptime::v1::region::DropColumns*
 Arena::CreateMaybeMessage< ::greptime::v1::region::DropColumns >(Arena* arena) {
   return Arena::CreateMessageInternal< ::greptime::v1::region::DropColumns >(arena);
 }
-template<> PROTOBUF_NOINLINE ::greptime::v1::region::ChangeColumnTypes*
-Arena::CreateMaybeMessage< ::greptime::v1::region::ChangeColumnTypes >(Arena* arena) {
-  return Arena::CreateMessageInternal< ::greptime::v1::region::ChangeColumnTypes >(arena);
-}
 template<> PROTOBUF_NOINLINE ::greptime::v1::region::AddColumn*
 Arena::CreateMaybeMessage< ::greptime::v1::region::AddColumn >(Arena* arena) {
   return Arena::CreateMessageInternal< ::greptime::v1::region::AddColumn >(arena);
 }
-template<> PROTOBUF_NOINLINE ::greptime::v1::region::ChangeColumnType*
-Arena::CreateMaybeMessage< ::greptime::v1::region::ChangeColumnType >(Arena* arena) {
-  return Arena::CreateMessageInternal< ::greptime::v1::region::ChangeColumnType >(arena);
-}
 template<> PROTOBUF_NOINLINE ::greptime::v1::region::DropColumn*
 Arena::CreateMaybeMessage< ::greptime::v1::region::DropColumn >(Arena* arena) {
   return Arena::CreateMessageInternal< ::greptime::v1::region::DropColumn >(arena);
diff --git a/c++/greptime/v1/region/server.pb.h b/c++/greptime/v1/region/server.pb.h
index 89126d50..b439aea3 100644
--- a/c++/greptime/v1/region/server.pb.h
+++ b/c++/greptime/v1/region/server.pb.h
@@ -65,12 +65,6 @@ extern AlterRequestDefaultTypeInternal _AlterRequest_default_instance_;
 class AlterRequests;
 struct AlterRequestsDefaultTypeInternal;
 extern AlterRequestsDefaultTypeInternal _AlterRequests_default_instance_;
-class ChangeColumnType;
-struct ChangeColumnTypeDefaultTypeInternal;
-extern ChangeColumnTypeDefaultTypeInternal _ChangeColumnType_default_instance_;
-class ChangeColumnTypes;
-struct ChangeColumnTypesDefaultTypeInternal;
-extern ChangeColumnTypesDefaultTypeInternal _ChangeColumnTypes_default_instance_;
 class CloseRequest;
 struct CloseRequestDefaultTypeInternal;
 extern CloseRequestDefaultTypeInternal _CloseRequest_default_instance_;
@@ -151,8 +145,6 @@ template<> ::greptime::v1::region::AddColumn* Arena::CreateMaybeMessage<::grepti
 template<> ::greptime::v1::region::AddColumns* Arena::CreateMaybeMessage<::greptime::v1::region::AddColumns>(Arena*);
 template<> ::greptime::v1::region::AlterRequest* Arena::CreateMaybeMessage<::greptime::v1::region::AlterRequest>(Arena*);
 template<> ::greptime::v1::region::AlterRequests* Arena::CreateMaybeMessage<::greptime::v1::region::AlterRequests>(Arena*);
-template<> ::greptime::v1::region::ChangeColumnType* Arena::CreateMaybeMessage<::greptime::v1::region::ChangeColumnType>(Arena*);
-template<> ::greptime::v1::region::ChangeColumnTypes* Arena::CreateMaybeMessage<::greptime::v1::region::ChangeColumnTypes>(Arena*);
 template<> ::greptime::v1::region::CloseRequest* Arena::CreateMaybeMessage<::greptime::v1::region::CloseRequest>(Arena*);
 template<> ::greptime::v1::region::CompactRequest* Arena::CreateMaybeMessage<::greptime::v1::region::CompactRequest>(Arena*);
 template<> ::greptime::v1::region::CreateRequest* Arena::CreateMaybeMessage<::greptime::v1::region::CreateRequest>(Arena*);
@@ -3387,23 +3379,23 @@ class AlterRequest final :
       ::greptime::v1::region::DropColumns* drop_columns);
   ::greptime::v1::region::DropColumns* unsafe_arena_release_drop_columns();
 
-  // .greptime.v1.region.ChangeColumnTypes change_column_types = 5;
+  // .greptime.v1.ChangeColumnTypes change_column_types = 5;
   bool has_change_column_types() const;
   private:
   bool _internal_has_change_column_types() const;
   public:
   void clear_change_column_types();
-  const ::greptime::v1::region::ChangeColumnTypes& change_column_types() const;
-  PROTOBUF_NODISCARD ::greptime::v1::region::ChangeColumnTypes* release_change_column_types();
-  ::greptime::v1::region::ChangeColumnTypes* mutable_change_column_types();
-  void set_allocated_change_column_types(::greptime::v1::region::ChangeColumnTypes* change_column_types);
+  const ::greptime::v1::ChangeColumnTypes& change_column_types() const;
+  PROTOBUF_NODISCARD ::greptime::v1::ChangeColumnTypes* release_change_column_types();
+  ::greptime::v1::ChangeColumnTypes* mutable_change_column_types();
+  void set_allocated_change_column_types(::greptime::v1::ChangeColumnTypes* change_column_types);
   private:
-  const ::greptime::v1::region::ChangeColumnTypes& _internal_change_column_types() const;
-  ::greptime::v1::region::ChangeColumnTypes* _internal_mutable_change_column_types();
+  const ::greptime::v1::ChangeColumnTypes& _internal_change_column_types() const;
+  ::greptime::v1::ChangeColumnTypes* _internal_mutable_change_column_types();
   public:
   void unsafe_arena_set_allocated_change_column_types(
-      ::greptime::v1::region::ChangeColumnTypes* change_column_types);
-  ::greptime::v1::region::ChangeColumnTypes* unsafe_arena_release_change_column_types();
+      ::greptime::v1::ChangeColumnTypes* change_column_types);
+  ::greptime::v1::ChangeColumnTypes* unsafe_arena_release_change_column_types();
 
   void clear_kind();
   KindCase kind_case() const;
@@ -3428,7 +3420,7 @@ class AlterRequest final :
         ::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized _constinit_;
       ::greptime::v1::region::AddColumns* add_columns_;
       ::greptime::v1::region::DropColumns* drop_columns_;
-      ::greptime::v1::region::ChangeColumnTypes* change_column_types_;
+      ::greptime::v1::ChangeColumnTypes* change_column_types_;
     } kind_;
     mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
     uint32_t _oneof_case_[1];
@@ -3753,163 +3745,6 @@ class DropColumns final :
 };
 // -------------------------------------------------------------------
 
-class ChangeColumnTypes final :
-    public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.region.ChangeColumnTypes) */ {
- public:
-  inline ChangeColumnTypes() : ChangeColumnTypes(nullptr) {}
-  ~ChangeColumnTypes() override;
-  explicit PROTOBUF_CONSTEXPR ChangeColumnTypes(::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
-
-  ChangeColumnTypes(const ChangeColumnTypes& from);
-  ChangeColumnTypes(ChangeColumnTypes&& from) noexcept
-    : ChangeColumnTypes() {
-    *this = ::std::move(from);
-  }
-
-  inline ChangeColumnTypes& operator=(const ChangeColumnTypes& from) {
-    CopyFrom(from);
-    return *this;
-  }
-  inline ChangeColumnTypes& operator=(ChangeColumnTypes&& from) noexcept {
-    if (this == &from) return *this;
-    if (GetOwningArena() == from.GetOwningArena()
-  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
-        && GetOwningArena() != nullptr
-  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
-    ) {
-      InternalSwap(&from);
-    } else {
-      CopyFrom(from);
-    }
-    return *this;
-  }
-
-  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* descriptor() {
-    return GetDescriptor();
-  }
-  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return default_instance().GetMetadata().descriptor;
-  }
-  static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return default_instance().GetMetadata().reflection;
-  }
-  static const ChangeColumnTypes& default_instance() {
-    return *internal_default_instance();
-  }
-  static inline const ChangeColumnTypes* internal_default_instance() {
-    return reinterpret_cast<const ChangeColumnTypes*>(
-               &_ChangeColumnTypes_default_instance_);
-  }
-  static constexpr int kIndexInFileMessages =
-    22;
-
-  friend void swap(ChangeColumnTypes& a, ChangeColumnTypes& b) {
-    a.Swap(&b);
-  }
-  inline void Swap(ChangeColumnTypes* other) {
-    if (other == this) return;
-  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
-    if (GetOwningArena() != nullptr &&
-        GetOwningArena() == other->GetOwningArena()) {
-   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
-    if (GetOwningArena() == other->GetOwningArena()) {
-  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
-      InternalSwap(other);
-    } else {
-      ::PROTOBUF_NAMESPACE_ID::internal::GenericSwap(this, other);
-    }
-  }
-  void UnsafeArenaSwap(ChangeColumnTypes* other) {
-    if (other == this) return;
-    GOOGLE_DCHECK(GetOwningArena() == other->GetOwningArena());
-    InternalSwap(other);
-  }
-
-  // implements Message ----------------------------------------------
-
-  ChangeColumnTypes* New(::PROTOBUF_NAMESPACE_ID::Arena* arena = nullptr) const final {
-    return CreateMaybeMessage<ChangeColumnTypes>(arena);
-  }
-  using ::PROTOBUF_NAMESPACE_ID::Message::CopyFrom;
-  void CopyFrom(const ChangeColumnTypes& from);
-  using ::PROTOBUF_NAMESPACE_ID::Message::MergeFrom;
-  void MergeFrom( const ChangeColumnTypes& from) {
-    ChangeColumnTypes::MergeImpl(*this, from);
-  }
-  private:
-  static void MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg);
-  public:
-  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
-  bool IsInitialized() const final;
-
-  size_t ByteSizeLong() const final;
-  const char* _InternalParse(const char* ptr, ::PROTOBUF_NAMESPACE_ID::internal::ParseContext* ctx) final;
-  uint8_t* _InternalSerialize(
-      uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const final;
-  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
-
-  private:
-  void SharedCtor(::PROTOBUF_NAMESPACE_ID::Arena* arena, bool is_message_owned);
-  void SharedDtor();
-  void SetCachedSize(int size) const final;
-  void InternalSwap(ChangeColumnTypes* other);
-
-  private:
-  friend class ::PROTOBUF_NAMESPACE_ID::internal::AnyMetadata;
-  static ::PROTOBUF_NAMESPACE_ID::StringPiece FullMessageName() {
-    return "greptime.v1.region.ChangeColumnTypes";
-  }
-  protected:
-  explicit ChangeColumnTypes(::PROTOBUF_NAMESPACE_ID::Arena* arena,
-                       bool is_message_owned = false);
-  public:
-
-  static const ClassData _class_data_;
-  const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*GetClassData() const final;
-
-  ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-
-  // nested types ----------------------------------------------------
-
-  // accessors -------------------------------------------------------
-
-  enum : int {
-    kChangeColumnTypesFieldNumber = 1,
-  };
-  // repeated .greptime.v1.region.ChangeColumnType change_column_types = 1;
-  int change_column_types_size() const;
-  private:
-  int _internal_change_column_types_size() const;
-  public:
-  void clear_change_column_types();
-  ::greptime::v1::region::ChangeColumnType* mutable_change_column_types(int index);
-  ::PROTOBUF_NAMESPACE_ID::RepeatedPtrField< ::greptime::v1::region::ChangeColumnType >*
-      mutable_change_column_types();
-  private:
-  const ::greptime::v1::region::ChangeColumnType& _internal_change_column_types(int index) const;
-  ::greptime::v1::region::ChangeColumnType* _internal_add_change_column_types();
-  public:
-  const ::greptime::v1::region::ChangeColumnType& change_column_types(int index) const;
-  ::greptime::v1::region::ChangeColumnType* add_change_column_types();
-  const ::PROTOBUF_NAMESPACE_ID::RepeatedPtrField< ::greptime::v1::region::ChangeColumnType >&
-      change_column_types() const;
-
-  // @@protoc_insertion_point(class_scope:greptime.v1.region.ChangeColumnTypes)
- private:
-  class _Internal;
-
-  template <typename T> friend class ::PROTOBUF_NAMESPACE_ID::Arena::InternalHelper;
-  typedef void InternalArenaConstructable_;
-  typedef void DestructorSkippable_;
-  struct Impl_ {
-    ::PROTOBUF_NAMESPACE_ID::RepeatedPtrField< ::greptime::v1::region::ChangeColumnType > change_column_types_;
-    mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
-  };
-  union { Impl_ _impl_; };
-  friend struct ::TableStruct_greptime_2fv1_2fregion_2fserver_2eproto;
-};
-// -------------------------------------------------------------------
-
 class AddColumn final :
     public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.region.AddColumn) */ {
  public:
@@ -3958,7 +3793,7 @@ class AddColumn final :
                &_AddColumn_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    23;
+    22;
 
   friend void swap(AddColumn& a, AddColumn& b) {
     a.Swap(&b);
@@ -4087,190 +3922,6 @@ class AddColumn final :
 };
 // -------------------------------------------------------------------
 
-class ChangeColumnType final :
-    public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.region.ChangeColumnType) */ {
- public:
-  inline ChangeColumnType() : ChangeColumnType(nullptr) {}
-  ~ChangeColumnType() override;
-  explicit PROTOBUF_CONSTEXPR ChangeColumnType(::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
-
-  ChangeColumnType(const ChangeColumnType& from);
-  ChangeColumnType(ChangeColumnType&& from) noexcept
-    : ChangeColumnType() {
-    *this = ::std::move(from);
-  }
-
-  inline ChangeColumnType& operator=(const ChangeColumnType& from) {
-    CopyFrom(from);
-    return *this;
-  }
-  inline ChangeColumnType& operator=(ChangeColumnType&& from) noexcept {
-    if (this == &from) return *this;
-    if (GetOwningArena() == from.GetOwningArena()
-  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
-        && GetOwningArena() != nullptr
-  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
-    ) {
-      InternalSwap(&from);
-    } else {
-      CopyFrom(from);
-    }
-    return *this;
-  }
-
-  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* descriptor() {
-    return GetDescriptor();
-  }
-  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return default_instance().GetMetadata().descriptor;
-  }
-  static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return default_instance().GetMetadata().reflection;
-  }
-  static const ChangeColumnType& default_instance() {
-    return *internal_default_instance();
-  }
-  static inline const ChangeColumnType* internal_default_instance() {
-    return reinterpret_cast<const ChangeColumnType*>(
-               &_ChangeColumnType_default_instance_);
-  }
-  static constexpr int kIndexInFileMessages =
-    24;
-
-  friend void swap(ChangeColumnType& a, ChangeColumnType& b) {
-    a.Swap(&b);
-  }
-  inline void Swap(ChangeColumnType* other) {
-    if (other == this) return;
-  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
-    if (GetOwningArena() != nullptr &&
-        GetOwningArena() == other->GetOwningArena()) {
-   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
-    if (GetOwningArena() == other->GetOwningArena()) {
-  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
-      InternalSwap(other);
-    } else {
-      ::PROTOBUF_NAMESPACE_ID::internal::GenericSwap(this, other);
-    }
-  }
-  void UnsafeArenaSwap(ChangeColumnType* other) {
-    if (other == this) return;
-    GOOGLE_DCHECK(GetOwningArena() == other->GetOwningArena());
-    InternalSwap(other);
-  }
-
-  // implements Message ----------------------------------------------
-
-  ChangeColumnType* New(::PROTOBUF_NAMESPACE_ID::Arena* arena = nullptr) const final {
-    return CreateMaybeMessage<ChangeColumnType>(arena);
-  }
-  using ::PROTOBUF_NAMESPACE_ID::Message::CopyFrom;
-  void CopyFrom(const ChangeColumnType& from);
-  using ::PROTOBUF_NAMESPACE_ID::Message::MergeFrom;
-  void MergeFrom( const ChangeColumnType& from) {
-    ChangeColumnType::MergeImpl(*this, from);
-  }
-  private:
-  static void MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg);
-  public:
-  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
-  bool IsInitialized() const final;
-
-  size_t ByteSizeLong() const final;
-  const char* _InternalParse(const char* ptr, ::PROTOBUF_NAMESPACE_ID::internal::ParseContext* ctx) final;
-  uint8_t* _InternalSerialize(
-      uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const final;
-  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
-
-  private:
-  void SharedCtor(::PROTOBUF_NAMESPACE_ID::Arena* arena, bool is_message_owned);
-  void SharedDtor();
-  void SetCachedSize(int size) const final;
-  void InternalSwap(ChangeColumnType* other);
-
-  private:
-  friend class ::PROTOBUF_NAMESPACE_ID::internal::AnyMetadata;
-  static ::PROTOBUF_NAMESPACE_ID::StringPiece FullMessageName() {
-    return "greptime.v1.region.ChangeColumnType";
-  }
-  protected:
-  explicit ChangeColumnType(::PROTOBUF_NAMESPACE_ID::Arena* arena,
-                       bool is_message_owned = false);
-  public:
-
-  static const ClassData _class_data_;
-  const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*GetClassData() const final;
-
-  ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-
-  // nested types ----------------------------------------------------
-
-  // accessors -------------------------------------------------------
-
-  enum : int {
-    kColumnNameFieldNumber = 1,
-    kTargetTypeExtensionFieldNumber = 3,
-    kTargetTypeFieldNumber = 2,
-  };
-  // string column_name = 1;
-  void clear_column_name();
-  const std::string& column_name() const;
-  template <typename ArgT0 = const std::string&, typename... ArgT>
-  void set_column_name(ArgT0&& arg0, ArgT... args);
-  std::string* mutable_column_name();
-  PROTOBUF_NODISCARD std::string* release_column_name();
-  void set_allocated_column_name(std::string* column_name);
-  private:
-  const std::string& _internal_column_name() const;
-  inline PROTOBUF_ALWAYS_INLINE void _internal_set_column_name(const std::string& value);
-  std::string* _internal_mutable_column_name();
-  public:
-
-  // .greptime.v1.ColumnDataTypeExtension target_type_extension = 3;
-  bool has_target_type_extension() const;
-  private:
-  bool _internal_has_target_type_extension() const;
-  public:
-  void clear_target_type_extension();
-  const ::greptime::v1::ColumnDataTypeExtension& target_type_extension() const;
-  PROTOBUF_NODISCARD ::greptime::v1::ColumnDataTypeExtension* release_target_type_extension();
-  ::greptime::v1::ColumnDataTypeExtension* mutable_target_type_extension();
-  void set_allocated_target_type_extension(::greptime::v1::ColumnDataTypeExtension* target_type_extension);
-  private:
-  const ::greptime::v1::ColumnDataTypeExtension& _internal_target_type_extension() const;
-  ::greptime::v1::ColumnDataTypeExtension* _internal_mutable_target_type_extension();
-  public:
-  void unsafe_arena_set_allocated_target_type_extension(
-      ::greptime::v1::ColumnDataTypeExtension* target_type_extension);
-  ::greptime::v1::ColumnDataTypeExtension* unsafe_arena_release_target_type_extension();
-
-  // .greptime.v1.ColumnDataType target_type = 2;
-  void clear_target_type();
-  ::greptime::v1::ColumnDataType target_type() const;
-  void set_target_type(::greptime::v1::ColumnDataType value);
-  private:
-  ::greptime::v1::ColumnDataType _internal_target_type() const;
-  void _internal_set_target_type(::greptime::v1::ColumnDataType value);
-  public:
-
-  // @@protoc_insertion_point(class_scope:greptime.v1.region.ChangeColumnType)
- private:
-  class _Internal;
-
-  template <typename T> friend class ::PROTOBUF_NAMESPACE_ID::Arena::InternalHelper;
-  typedef void InternalArenaConstructable_;
-  typedef void DestructorSkippable_;
-  struct Impl_ {
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr column_name_;
-    ::greptime::v1::ColumnDataTypeExtension* target_type_extension_;
-    int target_type_;
-    mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
-  };
-  union { Impl_ _impl_; };
-  friend struct ::TableStruct_greptime_2fv1_2fregion_2fserver_2eproto;
-};
-// -------------------------------------------------------------------
-
 class DropColumn final :
     public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.region.DropColumn) */ {
  public:
@@ -4319,7 +3970,7 @@ class DropColumn final :
                &_DropColumn_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    25;
+    23;
 
   friend void swap(DropColumn& a, DropColumn& b) {
     a.Swap(&b);
@@ -4472,7 +4123,7 @@ class FlushRequest final :
                &_FlushRequest_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    26;
+    24;
 
   friend void swap(FlushRequest& a, FlushRequest& b) {
     a.Swap(&b);
@@ -4620,7 +4271,7 @@ class CompactRequest final :
                &_CompactRequest_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    27;
+    25;
 
   friend void swap(CompactRequest& a, CompactRequest& b) {
     a.Swap(&b);
@@ -4768,7 +4419,7 @@ class TruncateRequest final :
                &_TruncateRequest_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    28;
+    26;
 
   friend void swap(TruncateRequest& a, TruncateRequest& b) {
     a.Swap(&b);
@@ -4916,7 +4567,7 @@ class RegionColumnDef final :
                &_RegionColumnDef_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    29;
+    27;
 
   friend void swap(RegionColumnDef& a, RegionColumnDef& b) {
     a.Swap(&b);
@@ -7600,7 +7251,7 @@ inline ::greptime::v1::region::DropColumns* AlterRequest::mutable_drop_columns()
   return _msg;
 }
 
-// .greptime.v1.region.ChangeColumnTypes change_column_types = 5;
+// .greptime.v1.ChangeColumnTypes change_column_types = 5;
 inline bool AlterRequest::_internal_has_change_column_types() const {
   return kind_case() == kChangeColumnTypes;
 }
@@ -7610,19 +7261,11 @@ inline bool AlterRequest::has_change_column_types() const {
 inline void AlterRequest::set_has_change_column_types() {
   _impl_._oneof_case_[0] = kChangeColumnTypes;
 }
-inline void AlterRequest::clear_change_column_types() {
-  if (_internal_has_change_column_types()) {
-    if (GetArenaForAllocation() == nullptr) {
-      delete _impl_.kind_.change_column_types_;
-    }
-    clear_has_kind();
-  }
-}
-inline ::greptime::v1::region::ChangeColumnTypes* AlterRequest::release_change_column_types() {
+inline ::greptime::v1::ChangeColumnTypes* AlterRequest::release_change_column_types() {
   // @@protoc_insertion_point(field_release:greptime.v1.region.AlterRequest.change_column_types)
   if (_internal_has_change_column_types()) {
     clear_has_kind();
-    ::greptime::v1::region::ChangeColumnTypes* temp = _impl_.kind_.change_column_types_;
+    ::greptime::v1::ChangeColumnTypes* temp = _impl_.kind_.change_column_types_;
     if (GetArenaForAllocation() != nullptr) {
       temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
     }
@@ -7632,27 +7275,27 @@ inline ::greptime::v1::region::ChangeColumnTypes* AlterRequest::release_change_c
     return nullptr;
   }
 }
-inline const ::greptime::v1::region::ChangeColumnTypes& AlterRequest::_internal_change_column_types() const {
+inline const ::greptime::v1::ChangeColumnTypes& AlterRequest::_internal_change_column_types() const {
   return _internal_has_change_column_types()
       ? *_impl_.kind_.change_column_types_
-      : reinterpret_cast< ::greptime::v1::region::ChangeColumnTypes&>(::greptime::v1::region::_ChangeColumnTypes_default_instance_);
+      : reinterpret_cast< ::greptime::v1::ChangeColumnTypes&>(::greptime::v1::_ChangeColumnTypes_default_instance_);
 }
-inline const ::greptime::v1::region::ChangeColumnTypes& AlterRequest::change_column_types() const {
+inline const ::greptime::v1::ChangeColumnTypes& AlterRequest::change_column_types() const {
   // @@protoc_insertion_point(field_get:greptime.v1.region.AlterRequest.change_column_types)
   return _internal_change_column_types();
 }
-inline ::greptime::v1::region::ChangeColumnTypes* AlterRequest::unsafe_arena_release_change_column_types() {
+inline ::greptime::v1::ChangeColumnTypes* AlterRequest::unsafe_arena_release_change_column_types() {
   // @@protoc_insertion_point(field_unsafe_arena_release:greptime.v1.region.AlterRequest.change_column_types)
   if (_internal_has_change_column_types()) {
     clear_has_kind();
-    ::greptime::v1::region::ChangeColumnTypes* temp = _impl_.kind_.change_column_types_;
+    ::greptime::v1::ChangeColumnTypes* temp = _impl_.kind_.change_column_types_;
     _impl_.kind_.change_column_types_ = nullptr;
     return temp;
   } else {
     return nullptr;
   }
 }
-inline void AlterRequest::unsafe_arena_set_allocated_change_column_types(::greptime::v1::region::ChangeColumnTypes* change_column_types) {
+inline void AlterRequest::unsafe_arena_set_allocated_change_column_types(::greptime::v1::ChangeColumnTypes* change_column_types) {
   clear_kind();
   if (change_column_types) {
     set_has_change_column_types();
@@ -7660,16 +7303,16 @@ inline void AlterRequest::unsafe_arena_set_allocated_change_column_types(::grept
   }
   // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.region.AlterRequest.change_column_types)
 }
-inline ::greptime::v1::region::ChangeColumnTypes* AlterRequest::_internal_mutable_change_column_types() {
+inline ::greptime::v1::ChangeColumnTypes* AlterRequest::_internal_mutable_change_column_types() {
   if (!_internal_has_change_column_types()) {
     clear_kind();
     set_has_change_column_types();
-    _impl_.kind_.change_column_types_ = CreateMaybeMessage< ::greptime::v1::region::ChangeColumnTypes >(GetArenaForAllocation());
+    _impl_.kind_.change_column_types_ = CreateMaybeMessage< ::greptime::v1::ChangeColumnTypes >(GetArenaForAllocation());
   }
   return _impl_.kind_.change_column_types_;
 }
-inline ::greptime::v1::region::ChangeColumnTypes* AlterRequest::mutable_change_column_types() {
-  ::greptime::v1::region::ChangeColumnTypes* _msg = _internal_mutable_change_column_types();
+inline ::greptime::v1::ChangeColumnTypes* AlterRequest::mutable_change_column_types() {
+  ::greptime::v1::ChangeColumnTypes* _msg = _internal_mutable_change_column_types();
   // @@protoc_insertion_point(field_mutable:greptime.v1.region.AlterRequest.change_column_types)
   return _msg;
 }
@@ -7793,50 +7436,6 @@ DropColumns::drop_columns() const {
 
 // -------------------------------------------------------------------
 
-// ChangeColumnTypes
-
-// repeated .greptime.v1.region.ChangeColumnType change_column_types = 1;
-inline int ChangeColumnTypes::_internal_change_column_types_size() const {
-  return _impl_.change_column_types_.size();
-}
-inline int ChangeColumnTypes::change_column_types_size() const {
-  return _internal_change_column_types_size();
-}
-inline void ChangeColumnTypes::clear_change_column_types() {
-  _impl_.change_column_types_.Clear();
-}
-inline ::greptime::v1::region::ChangeColumnType* ChangeColumnTypes::mutable_change_column_types(int index) {
-  // @@protoc_insertion_point(field_mutable:greptime.v1.region.ChangeColumnTypes.change_column_types)
-  return _impl_.change_column_types_.Mutable(index);
-}
-inline ::PROTOBUF_NAMESPACE_ID::RepeatedPtrField< ::greptime::v1::region::ChangeColumnType >*
-ChangeColumnTypes::mutable_change_column_types() {
-  // @@protoc_insertion_point(field_mutable_list:greptime.v1.region.ChangeColumnTypes.change_column_types)
-  return &_impl_.change_column_types_;
-}
-inline const ::greptime::v1::region::ChangeColumnType& ChangeColumnTypes::_internal_change_column_types(int index) const {
-  return _impl_.change_column_types_.Get(index);
-}
-inline const ::greptime::v1::region::ChangeColumnType& ChangeColumnTypes::change_column_types(int index) const {
-  // @@protoc_insertion_point(field_get:greptime.v1.region.ChangeColumnTypes.change_column_types)
-  return _internal_change_column_types(index);
-}
-inline ::greptime::v1::region::ChangeColumnType* ChangeColumnTypes::_internal_add_change_column_types() {
-  return _impl_.change_column_types_.Add();
-}
-inline ::greptime::v1::region::ChangeColumnType* ChangeColumnTypes::add_change_column_types() {
-  ::greptime::v1::region::ChangeColumnType* _add = _internal_add_change_column_types();
-  // @@protoc_insertion_point(field_add:greptime.v1.region.ChangeColumnTypes.change_column_types)
-  return _add;
-}
-inline const ::PROTOBUF_NAMESPACE_ID::RepeatedPtrField< ::greptime::v1::region::ChangeColumnType >&
-ChangeColumnTypes::change_column_types() const {
-  // @@protoc_insertion_point(field_list:greptime.v1.region.ChangeColumnTypes.change_column_types)
-  return _impl_.change_column_types_;
-}
-
-// -------------------------------------------------------------------
-
 // AddColumn
 
 // .greptime.v1.region.RegionColumnDef column_def = 1;
@@ -8016,165 +7615,6 @@ inline void AddColumn::set_allocated_location(::greptime::v1::AddColumnLocation*
 
 // -------------------------------------------------------------------
 
-// ChangeColumnType
-
-// string column_name = 1;
-inline void ChangeColumnType::clear_column_name() {
-  _impl_.column_name_.ClearToEmpty();
-}
-inline const std::string& ChangeColumnType::column_name() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.region.ChangeColumnType.column_name)
-  return _internal_column_name();
-}
-template <typename ArgT0, typename... ArgT>
-inline PROTOBUF_ALWAYS_INLINE
-void ChangeColumnType::set_column_name(ArgT0&& arg0, ArgT... args) {
- 
- _impl_.column_name_.Set(static_cast<ArgT0 &&>(arg0), args..., GetArenaForAllocation());
-  // @@protoc_insertion_point(field_set:greptime.v1.region.ChangeColumnType.column_name)
-}
-inline std::string* ChangeColumnType::mutable_column_name() {
-  std::string* _s = _internal_mutable_column_name();
-  // @@protoc_insertion_point(field_mutable:greptime.v1.region.ChangeColumnType.column_name)
-  return _s;
-}
-inline const std::string& ChangeColumnType::_internal_column_name() const {
-  return _impl_.column_name_.Get();
-}
-inline void ChangeColumnType::_internal_set_column_name(const std::string& value) {
-  
-  _impl_.column_name_.Set(value, GetArenaForAllocation());
-}
-inline std::string* ChangeColumnType::_internal_mutable_column_name() {
-  
-  return _impl_.column_name_.Mutable(GetArenaForAllocation());
-}
-inline std::string* ChangeColumnType::release_column_name() {
-  // @@protoc_insertion_point(field_release:greptime.v1.region.ChangeColumnType.column_name)
-  return _impl_.column_name_.Release();
-}
-inline void ChangeColumnType::set_allocated_column_name(std::string* column_name) {
-  if (column_name != nullptr) {
-    
-  } else {
-    
-  }
-  _impl_.column_name_.SetAllocated(column_name, GetArenaForAllocation());
-#ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  if (_impl_.column_name_.IsDefault()) {
-    _impl_.column_name_.Set("", GetArenaForAllocation());
-  }
-#endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.region.ChangeColumnType.column_name)
-}
-
-// .greptime.v1.ColumnDataType target_type = 2;
-inline void ChangeColumnType::clear_target_type() {
-  _impl_.target_type_ = 0;
-}
-inline ::greptime::v1::ColumnDataType ChangeColumnType::_internal_target_type() const {
-  return static_cast< ::greptime::v1::ColumnDataType >(_impl_.target_type_);
-}
-inline ::greptime::v1::ColumnDataType ChangeColumnType::target_type() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.region.ChangeColumnType.target_type)
-  return _internal_target_type();
-}
-inline void ChangeColumnType::_internal_set_target_type(::greptime::v1::ColumnDataType value) {
-  
-  _impl_.target_type_ = value;
-}
-inline void ChangeColumnType::set_target_type(::greptime::v1::ColumnDataType value) {
-  _internal_set_target_type(value);
-  // @@protoc_insertion_point(field_set:greptime.v1.region.ChangeColumnType.target_type)
-}
-
-// .greptime.v1.ColumnDataTypeExtension target_type_extension = 3;
-inline bool ChangeColumnType::_internal_has_target_type_extension() const {
-  return this != internal_default_instance() && _impl_.target_type_extension_ != nullptr;
-}
-inline bool ChangeColumnType::has_target_type_extension() const {
-  return _internal_has_target_type_extension();
-}
-inline const ::greptime::v1::ColumnDataTypeExtension& ChangeColumnType::_internal_target_type_extension() const {
-  const ::greptime::v1::ColumnDataTypeExtension* p = _impl_.target_type_extension_;
-  return p != nullptr ? *p : reinterpret_cast<const ::greptime::v1::ColumnDataTypeExtension&>(
-      ::greptime::v1::_ColumnDataTypeExtension_default_instance_);
-}
-inline const ::greptime::v1::ColumnDataTypeExtension& ChangeColumnType::target_type_extension() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.region.ChangeColumnType.target_type_extension)
-  return _internal_target_type_extension();
-}
-inline void ChangeColumnType::unsafe_arena_set_allocated_target_type_extension(
-    ::greptime::v1::ColumnDataTypeExtension* target_type_extension) {
-  if (GetArenaForAllocation() == nullptr) {
-    delete reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.target_type_extension_);
-  }
-  _impl_.target_type_extension_ = target_type_extension;
-  if (target_type_extension) {
-    
-  } else {
-    
-  }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.region.ChangeColumnType.target_type_extension)
-}
-inline ::greptime::v1::ColumnDataTypeExtension* ChangeColumnType::release_target_type_extension() {
-  
-  ::greptime::v1::ColumnDataTypeExtension* temp = _impl_.target_type_extension_;
-  _impl_.target_type_extension_ = nullptr;
-#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
-  auto* old =  reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(temp);
-  temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
-  if (GetArenaForAllocation() == nullptr) { delete old; }
-#else  // PROTOBUF_FORCE_COPY_IN_RELEASE
-  if (GetArenaForAllocation() != nullptr) {
-    temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
-  }
-#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
-  return temp;
-}
-inline ::greptime::v1::ColumnDataTypeExtension* ChangeColumnType::unsafe_arena_release_target_type_extension() {
-  // @@protoc_insertion_point(field_release:greptime.v1.region.ChangeColumnType.target_type_extension)
-  
-  ::greptime::v1::ColumnDataTypeExtension* temp = _impl_.target_type_extension_;
-  _impl_.target_type_extension_ = nullptr;
-  return temp;
-}
-inline ::greptime::v1::ColumnDataTypeExtension* ChangeColumnType::_internal_mutable_target_type_extension() {
-  
-  if (_impl_.target_type_extension_ == nullptr) {
-    auto* p = CreateMaybeMessage<::greptime::v1::ColumnDataTypeExtension>(GetArenaForAllocation());
-    _impl_.target_type_extension_ = p;
-  }
-  return _impl_.target_type_extension_;
-}
-inline ::greptime::v1::ColumnDataTypeExtension* ChangeColumnType::mutable_target_type_extension() {
-  ::greptime::v1::ColumnDataTypeExtension* _msg = _internal_mutable_target_type_extension();
-  // @@protoc_insertion_point(field_mutable:greptime.v1.region.ChangeColumnType.target_type_extension)
-  return _msg;
-}
-inline void ChangeColumnType::set_allocated_target_type_extension(::greptime::v1::ColumnDataTypeExtension* target_type_extension) {
-  ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
-  if (message_arena == nullptr) {
-    delete reinterpret_cast< ::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.target_type_extension_);
-  }
-  if (target_type_extension) {
-    ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
-        ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(
-                reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(target_type_extension));
-    if (message_arena != submessage_arena) {
-      target_type_extension = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
-          message_arena, target_type_extension, submessage_arena);
-    }
-    
-  } else {
-    
-  }
-  _impl_.target_type_extension_ = target_type_extension;
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.region.ChangeColumnType.target_type_extension)
-}
-
-// -------------------------------------------------------------------
-
 // DropColumn
 
 // string name = 1;
@@ -8465,10 +7905,6 @@ inline void RegionColumnDef::set_column_id(uint32_t value) {
 
 // -------------------------------------------------------------------
 
-// -------------------------------------------------------------------
-
-// -------------------------------------------------------------------
-
 
 // @@protoc_insertion_point(namespace_scope)
 
diff --git a/java/src/main/java/io/greptime/v1/region/Server.java b/java/src/main/java/io/greptime/v1/region/Server.java
index 5cf6eaa5..e3260c3f 100644
--- a/java/src/main/java/io/greptime/v1/region/Server.java
+++ b/java/src/main/java/io/greptime/v1/region/Server.java
@@ -16342,19 +16342,19 @@ public interface AlterRequestOrBuilder extends
     io.greptime.v1.region.Server.DropColumnsOrBuilder getDropColumnsOrBuilder();
 
     /**
-     * <code>.greptime.v1.region.ChangeColumnTypes change_column_types = 5;</code>
+     * <code>.greptime.v1.ChangeColumnTypes change_column_types = 5;</code>
      * @return Whether the changeColumnTypes field is set.
      */
     boolean hasChangeColumnTypes();
     /**
-     * <code>.greptime.v1.region.ChangeColumnTypes change_column_types = 5;</code>
+     * <code>.greptime.v1.ChangeColumnTypes change_column_types = 5;</code>
      * @return The changeColumnTypes.
      */
-    io.greptime.v1.region.Server.ChangeColumnTypes getChangeColumnTypes();
+    io.greptime.v1.Ddl.ChangeColumnTypes getChangeColumnTypes();
     /**
-     * <code>.greptime.v1.region.ChangeColumnTypes change_column_types = 5;</code>
+     * <code>.greptime.v1.ChangeColumnTypes change_column_types = 5;</code>
      */
-    io.greptime.v1.region.Server.ChangeColumnTypesOrBuilder getChangeColumnTypesOrBuilder();
+    io.greptime.v1.Ddl.ChangeColumnTypesOrBuilder getChangeColumnTypesOrBuilder();
 
     /**
      * <pre>
@@ -16452,14 +16452,14 @@ private AlterRequest(
               break;
             }
             case 42: {
-              io.greptime.v1.region.Server.ChangeColumnTypes.Builder subBuilder = null;
+              io.greptime.v1.Ddl.ChangeColumnTypes.Builder subBuilder = null;
               if (kindCase_ == 5) {
-                subBuilder = ((io.greptime.v1.region.Server.ChangeColumnTypes) kind_).toBuilder();
+                subBuilder = ((io.greptime.v1.Ddl.ChangeColumnTypes) kind_).toBuilder();
               }
               kind_ =
-                  input.readMessage(io.greptime.v1.region.Server.ChangeColumnTypes.parser(), extensionRegistry);
+                  input.readMessage(io.greptime.v1.Ddl.ChangeColumnTypes.parser(), extensionRegistry);
               if (subBuilder != null) {
-                subBuilder.mergeFrom((io.greptime.v1.region.Server.ChangeColumnTypes) kind_);
+                subBuilder.mergeFrom((io.greptime.v1.Ddl.ChangeColumnTypes) kind_);
                 kind_ = subBuilder.buildPartial();
               }
               kindCase_ = 5;
@@ -16617,7 +16617,7 @@ public io.greptime.v1.region.Server.DropColumnsOrBuilder getDropColumnsOrBuilder
 
     public static final int CHANGE_COLUMN_TYPES_FIELD_NUMBER = 5;
     /**
-     * <code>.greptime.v1.region.ChangeColumnTypes change_column_types = 5;</code>
+     * <code>.greptime.v1.ChangeColumnTypes change_column_types = 5;</code>
      * @return Whether the changeColumnTypes field is set.
      */
     @java.lang.Override
@@ -16625,25 +16625,25 @@ public boolean hasChangeColumnTypes() {
       return kindCase_ == 5;
     }
     /**
-     * <code>.greptime.v1.region.ChangeColumnTypes change_column_types = 5;</code>
+     * <code>.greptime.v1.ChangeColumnTypes change_column_types = 5;</code>
      * @return The changeColumnTypes.
      */
     @java.lang.Override
-    public io.greptime.v1.region.Server.ChangeColumnTypes getChangeColumnTypes() {
+    public io.greptime.v1.Ddl.ChangeColumnTypes getChangeColumnTypes() {
       if (kindCase_ == 5) {
-         return (io.greptime.v1.region.Server.ChangeColumnTypes) kind_;
+         return (io.greptime.v1.Ddl.ChangeColumnTypes) kind_;
       }
-      return io.greptime.v1.region.Server.ChangeColumnTypes.getDefaultInstance();
+      return io.greptime.v1.Ddl.ChangeColumnTypes.getDefaultInstance();
     }
     /**
-     * <code>.greptime.v1.region.ChangeColumnTypes change_column_types = 5;</code>
+     * <code>.greptime.v1.ChangeColumnTypes change_column_types = 5;</code>
      */
     @java.lang.Override
-    public io.greptime.v1.region.Server.ChangeColumnTypesOrBuilder getChangeColumnTypesOrBuilder() {
+    public io.greptime.v1.Ddl.ChangeColumnTypesOrBuilder getChangeColumnTypesOrBuilder() {
       if (kindCase_ == 5) {
-         return (io.greptime.v1.region.Server.ChangeColumnTypes) kind_;
+         return (io.greptime.v1.Ddl.ChangeColumnTypes) kind_;
       }
-      return io.greptime.v1.region.Server.ChangeColumnTypes.getDefaultInstance();
+      return io.greptime.v1.Ddl.ChangeColumnTypes.getDefaultInstance();
     }
 
     public static final int SCHEMA_VERSION_FIELD_NUMBER = 4;
@@ -16688,7 +16688,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output)
         output.writeUInt64(4, schemaVersion_);
       }
       if (kindCase_ == 5) {
-        output.writeMessage(5, (io.greptime.v1.region.Server.ChangeColumnTypes) kind_);
+        output.writeMessage(5, (io.greptime.v1.Ddl.ChangeColumnTypes) kind_);
       }
       unknownFields.writeTo(output);
     }
@@ -16717,7 +16717,7 @@ public int getSerializedSize() {
       }
       if (kindCase_ == 5) {
         size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(5, (io.greptime.v1.region.Server.ChangeColumnTypes) kind_);
+          .computeMessageSize(5, (io.greptime.v1.Ddl.ChangeColumnTypes) kind_);
       }
       size += unknownFields.getSerializedSize();
       memoizedSize = size;
@@ -17408,9 +17408,9 @@ public io.greptime.v1.region.Server.DropColumnsOrBuilder getDropColumnsOrBuilder
       }
 
       private com.google.protobuf.SingleFieldBuilderV3<
-          io.greptime.v1.region.Server.ChangeColumnTypes, io.greptime.v1.region.Server.ChangeColumnTypes.Builder, io.greptime.v1.region.Server.ChangeColumnTypesOrBuilder> changeColumnTypesBuilder_;
+          io.greptime.v1.Ddl.ChangeColumnTypes, io.greptime.v1.Ddl.ChangeColumnTypes.Builder, io.greptime.v1.Ddl.ChangeColumnTypesOrBuilder> changeColumnTypesBuilder_;
       /**
-       * <code>.greptime.v1.region.ChangeColumnTypes change_column_types = 5;</code>
+       * <code>.greptime.v1.ChangeColumnTypes change_column_types = 5;</code>
        * @return Whether the changeColumnTypes field is set.
        */
       @java.lang.Override
@@ -17418,27 +17418,27 @@ public boolean hasChangeColumnTypes() {
         return kindCase_ == 5;
       }
       /**
-       * <code>.greptime.v1.region.ChangeColumnTypes change_column_types = 5;</code>
+       * <code>.greptime.v1.ChangeColumnTypes change_column_types = 5;</code>
        * @return The changeColumnTypes.
        */
       @java.lang.Override
-      public io.greptime.v1.region.Server.ChangeColumnTypes getChangeColumnTypes() {
+      public io.greptime.v1.Ddl.ChangeColumnTypes getChangeColumnTypes() {
         if (changeColumnTypesBuilder_ == null) {
           if (kindCase_ == 5) {
-            return (io.greptime.v1.region.Server.ChangeColumnTypes) kind_;
+            return (io.greptime.v1.Ddl.ChangeColumnTypes) kind_;
           }
-          return io.greptime.v1.region.Server.ChangeColumnTypes.getDefaultInstance();
+          return io.greptime.v1.Ddl.ChangeColumnTypes.getDefaultInstance();
         } else {
           if (kindCase_ == 5) {
             return changeColumnTypesBuilder_.getMessage();
           }
-          return io.greptime.v1.region.Server.ChangeColumnTypes.getDefaultInstance();
+          return io.greptime.v1.Ddl.ChangeColumnTypes.getDefaultInstance();
         }
       }
       /**
-       * <code>.greptime.v1.region.ChangeColumnTypes change_column_types = 5;</code>
+       * <code>.greptime.v1.ChangeColumnTypes change_column_types = 5;</code>
        */
-      public Builder setChangeColumnTypes(io.greptime.v1.region.Server.ChangeColumnTypes value) {
+      public Builder setChangeColumnTypes(io.greptime.v1.Ddl.ChangeColumnTypes value) {
         if (changeColumnTypesBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -17452,10 +17452,10 @@ public Builder setChangeColumnTypes(io.greptime.v1.region.Server.ChangeColumnTyp
         return this;
       }
       /**
-       * <code>.greptime.v1.region.ChangeColumnTypes change_column_types = 5;</code>
+       * <code>.greptime.v1.ChangeColumnTypes change_column_types = 5;</code>
        */
       public Builder setChangeColumnTypes(
-          io.greptime.v1.region.Server.ChangeColumnTypes.Builder builderForValue) {
+          io.greptime.v1.Ddl.ChangeColumnTypes.Builder builderForValue) {
         if (changeColumnTypesBuilder_ == null) {
           kind_ = builderForValue.build();
           onChanged();
@@ -17466,13 +17466,13 @@ public Builder setChangeColumnTypes(
         return this;
       }
       /**
-       * <code>.greptime.v1.region.ChangeColumnTypes change_column_types = 5;</code>
+       * <code>.greptime.v1.ChangeColumnTypes change_column_types = 5;</code>
        */
-      public Builder mergeChangeColumnTypes(io.greptime.v1.region.Server.ChangeColumnTypes value) {
+      public Builder mergeChangeColumnTypes(io.greptime.v1.Ddl.ChangeColumnTypes value) {
         if (changeColumnTypesBuilder_ == null) {
           if (kindCase_ == 5 &&
-              kind_ != io.greptime.v1.region.Server.ChangeColumnTypes.getDefaultInstance()) {
-            kind_ = io.greptime.v1.region.Server.ChangeColumnTypes.newBuilder((io.greptime.v1.region.Server.ChangeColumnTypes) kind_)
+              kind_ != io.greptime.v1.Ddl.ChangeColumnTypes.getDefaultInstance()) {
+            kind_ = io.greptime.v1.Ddl.ChangeColumnTypes.newBuilder((io.greptime.v1.Ddl.ChangeColumnTypes) kind_)
                 .mergeFrom(value).buildPartial();
           } else {
             kind_ = value;
@@ -17489,7 +17489,7 @@ public Builder mergeChangeColumnTypes(io.greptime.v1.region.Server.ChangeColumnT
         return this;
       }
       /**
-       * <code>.greptime.v1.region.ChangeColumnTypes change_column_types = 5;</code>
+       * <code>.greptime.v1.ChangeColumnTypes change_column_types = 5;</code>
        */
       public Builder clearChangeColumnTypes() {
         if (changeColumnTypesBuilder_ == null) {
@@ -17508,38 +17508,38 @@ public Builder clearChangeColumnTypes() {
         return this;
       }
       /**
-       * <code>.greptime.v1.region.ChangeColumnTypes change_column_types = 5;</code>
+       * <code>.greptime.v1.ChangeColumnTypes change_column_types = 5;</code>
        */
-      public io.greptime.v1.region.Server.ChangeColumnTypes.Builder getChangeColumnTypesBuilder() {
+      public io.greptime.v1.Ddl.ChangeColumnTypes.Builder getChangeColumnTypesBuilder() {
         return getChangeColumnTypesFieldBuilder().getBuilder();
       }
       /**
-       * <code>.greptime.v1.region.ChangeColumnTypes change_column_types = 5;</code>
+       * <code>.greptime.v1.ChangeColumnTypes change_column_types = 5;</code>
        */
       @java.lang.Override
-      public io.greptime.v1.region.Server.ChangeColumnTypesOrBuilder getChangeColumnTypesOrBuilder() {
+      public io.greptime.v1.Ddl.ChangeColumnTypesOrBuilder getChangeColumnTypesOrBuilder() {
         if ((kindCase_ == 5) && (changeColumnTypesBuilder_ != null)) {
           return changeColumnTypesBuilder_.getMessageOrBuilder();
         } else {
           if (kindCase_ == 5) {
-            return (io.greptime.v1.region.Server.ChangeColumnTypes) kind_;
+            return (io.greptime.v1.Ddl.ChangeColumnTypes) kind_;
           }
-          return io.greptime.v1.region.Server.ChangeColumnTypes.getDefaultInstance();
+          return io.greptime.v1.Ddl.ChangeColumnTypes.getDefaultInstance();
         }
       }
       /**
-       * <code>.greptime.v1.region.ChangeColumnTypes change_column_types = 5;</code>
+       * <code>.greptime.v1.ChangeColumnTypes change_column_types = 5;</code>
        */
       private com.google.protobuf.SingleFieldBuilderV3<
-          io.greptime.v1.region.Server.ChangeColumnTypes, io.greptime.v1.region.Server.ChangeColumnTypes.Builder, io.greptime.v1.region.Server.ChangeColumnTypesOrBuilder> 
+          io.greptime.v1.Ddl.ChangeColumnTypes, io.greptime.v1.Ddl.ChangeColumnTypes.Builder, io.greptime.v1.Ddl.ChangeColumnTypesOrBuilder> 
           getChangeColumnTypesFieldBuilder() {
         if (changeColumnTypesBuilder_ == null) {
           if (!(kindCase_ == 5)) {
-            kind_ = io.greptime.v1.region.Server.ChangeColumnTypes.getDefaultInstance();
+            kind_ = io.greptime.v1.Ddl.ChangeColumnTypes.getDefaultInstance();
           }
           changeColumnTypesBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              io.greptime.v1.region.Server.ChangeColumnTypes, io.greptime.v1.region.Server.ChangeColumnTypes.Builder, io.greptime.v1.region.Server.ChangeColumnTypesOrBuilder>(
-                  (io.greptime.v1.region.Server.ChangeColumnTypes) kind_,
+              io.greptime.v1.Ddl.ChangeColumnTypes, io.greptime.v1.Ddl.ChangeColumnTypes.Builder, io.greptime.v1.Ddl.ChangeColumnTypesOrBuilder>(
+                  (io.greptime.v1.Ddl.ChangeColumnTypes) kind_,
                   getParentForChildren(),
                   isClean());
           kind_ = null;
@@ -19234,1691 +19234,60 @@ public io.greptime.v1.region.Server.DropColumns getDefaultInstanceForType() {
 
   }
 
-  public interface ChangeColumnTypesOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:greptime.v1.region.ChangeColumnTypes)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <code>repeated .greptime.v1.region.ChangeColumnType change_column_types = 1;</code>
-     */
-    java.util.List<io.greptime.v1.region.Server.ChangeColumnType> 
-        getChangeColumnTypesList();
-    /**
-     * <code>repeated .greptime.v1.region.ChangeColumnType change_column_types = 1;</code>
-     */
-    io.greptime.v1.region.Server.ChangeColumnType getChangeColumnTypes(int index);
-    /**
-     * <code>repeated .greptime.v1.region.ChangeColumnType change_column_types = 1;</code>
-     */
-    int getChangeColumnTypesCount();
-    /**
-     * <code>repeated .greptime.v1.region.ChangeColumnType change_column_types = 1;</code>
-     */
-    java.util.List<? extends io.greptime.v1.region.Server.ChangeColumnTypeOrBuilder> 
-        getChangeColumnTypesOrBuilderList();
-    /**
-     * <code>repeated .greptime.v1.region.ChangeColumnType change_column_types = 1;</code>
-     */
-    io.greptime.v1.region.Server.ChangeColumnTypeOrBuilder getChangeColumnTypesOrBuilder(
-        int index);
-  }
-  /**
-   * Protobuf type {@code greptime.v1.region.ChangeColumnTypes}
-   */
-  public static final class ChangeColumnTypes extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:greptime.v1.region.ChangeColumnTypes)
-      ChangeColumnTypesOrBuilder {
-  private static final long serialVersionUID = 0L;
-    // Use ChangeColumnTypes.newBuilder() to construct.
-    private ChangeColumnTypes(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private ChangeColumnTypes() {
-      changeColumnTypes_ = java.util.Collections.emptyList();
-    }
-
-    @java.lang.Override
-    @SuppressWarnings({"unused"})
-    protected java.lang.Object newInstance(
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-          io.greptime.v1.region.Server.RegionColumnDef, io.greptime.v1.region.Server.RegionColumnDef.Builder, io.greptime.v1.region.Server.RegionColumnDefOrBuilder> columnDefBuilder_;
-      /**
-       * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
-       * @return Whether the columnDef field is set.
-       */
-      public boolean hasColumnDef() {
-        return columnDefBuilder_ != null || columnDef_ != null;
-      }
-      /**
-       * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
-       * @return The columnDef.
-       */
-      public io.greptime.v1.region.Server.RegionColumnDef getColumnDef() {
-        if (columnDefBuilder_ == null) {
-          return columnDef_ == null ? io.greptime.v1.region.Server.RegionColumnDef.getDefaultInstance() : columnDef_;
-        } else {
-          return columnDefBuilder_.getMessage();
-        }
-      }
-      /**
-       * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
-       */
-      public Builder setColumnDef(io.greptime.v1.region.Server.RegionColumnDef value) {
-        if (columnDefBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          columnDef_ = value;
-          onChanged();
-        } else {
-          columnDefBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
-       */
-      public Builder setColumnDef(
-          io.greptime.v1.region.Server.RegionColumnDef.Builder builderForValue) {
-        if (columnDefBuilder_ == null) {
-          columnDef_ = builderForValue.build();
-          onChanged();
-        } else {
-          columnDefBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
-       */
-      public Builder mergeColumnDef(io.greptime.v1.region.Server.RegionColumnDef value) {
-        if (columnDefBuilder_ == null) {
-          if (columnDef_ != null) {
-            columnDef_ =
-              io.greptime.v1.region.Server.RegionColumnDef.newBuilder(columnDef_).mergeFrom(value).buildPartial();
-          } else {
-            columnDef_ = value;
-          }
-          onChanged();
-        } else {
-          columnDefBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
-       */
-      public Builder clearColumnDef() {
-        if (columnDefBuilder_ == null) {
-          columnDef_ = null;
-          onChanged();
-        } else {
-          columnDef_ = null;
-          columnDefBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
-       */
-      public io.greptime.v1.region.Server.RegionColumnDef.Builder getColumnDefBuilder() {
-        
-        onChanged();
-        return getColumnDefFieldBuilder().getBuilder();
-      }
-      /**
-       * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
-       */
-      public io.greptime.v1.region.Server.RegionColumnDefOrBuilder getColumnDefOrBuilder() {
-        if (columnDefBuilder_ != null) {
-          return columnDefBuilder_.getMessageOrBuilder();
-        } else {
-          return columnDef_ == null ?
-              io.greptime.v1.region.Server.RegionColumnDef.getDefaultInstance() : columnDef_;
-        }
-      }
-      /**
-       * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          io.greptime.v1.region.Server.RegionColumnDef, io.greptime.v1.region.Server.RegionColumnDef.Builder, io.greptime.v1.region.Server.RegionColumnDefOrBuilder> 
-          getColumnDefFieldBuilder() {
-        if (columnDefBuilder_ == null) {
-          columnDefBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              io.greptime.v1.region.Server.RegionColumnDef, io.greptime.v1.region.Server.RegionColumnDef.Builder, io.greptime.v1.region.Server.RegionColumnDefOrBuilder>(
-                  getColumnDef(),
-                  getParentForChildren(),
-                  isClean());
-          columnDef_ = null;
-        }
-        return columnDefBuilder_;
-      }
-
-      private io.greptime.v1.Ddl.AddColumnLocation location_;
-      private com.google.protobuf.SingleFieldBuilderV3<
-          io.greptime.v1.Ddl.AddColumnLocation, io.greptime.v1.Ddl.AddColumnLocation.Builder, io.greptime.v1.Ddl.AddColumnLocationOrBuilder> locationBuilder_;
-      /**
-       * <code>.greptime.v1.AddColumnLocation location = 3;</code>
-       * @return Whether the location field is set.
-       */
-      public boolean hasLocation() {
-        return locationBuilder_ != null || location_ != null;
-      }
-      /**
-       * <code>.greptime.v1.AddColumnLocation location = 3;</code>
-       * @return The location.
-       */
-      public io.greptime.v1.Ddl.AddColumnLocation getLocation() {
-        if (locationBuilder_ == null) {
-          return location_ == null ? io.greptime.v1.Ddl.AddColumnLocation.getDefaultInstance() : location_;
-        } else {
-          return locationBuilder_.getMessage();
-        }
-      }
-      /**
-       * <code>.greptime.v1.AddColumnLocation location = 3;</code>
-       */
-      public Builder setLocation(io.greptime.v1.Ddl.AddColumnLocation value) {
-        if (locationBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          location_ = value;
-          onChanged();
-        } else {
-          locationBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <code>.greptime.v1.AddColumnLocation location = 3;</code>
-       */
-      public Builder setLocation(
-          io.greptime.v1.Ddl.AddColumnLocation.Builder builderForValue) {
-        if (locationBuilder_ == null) {
-          location_ = builderForValue.build();
-          onChanged();
-        } else {
-          locationBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <code>.greptime.v1.AddColumnLocation location = 3;</code>
-       */
-      public Builder mergeLocation(io.greptime.v1.Ddl.AddColumnLocation value) {
-        if (locationBuilder_ == null) {
-          if (location_ != null) {
-            location_ =
-              io.greptime.v1.Ddl.AddColumnLocation.newBuilder(location_).mergeFrom(value).buildPartial();
-          } else {
-            location_ = value;
-          }
-          onChanged();
-        } else {
-          locationBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <code>.greptime.v1.AddColumnLocation location = 3;</code>
-       */
-      public Builder clearLocation() {
-        if (locationBuilder_ == null) {
-          location_ = null;
-          onChanged();
-        } else {
-          location_ = null;
-          locationBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <code>.greptime.v1.AddColumnLocation location = 3;</code>
-       */
-      public io.greptime.v1.Ddl.AddColumnLocation.Builder getLocationBuilder() {
-        
-        onChanged();
-        return getLocationFieldBuilder().getBuilder();
-      }
-      /**
-       * <code>.greptime.v1.AddColumnLocation location = 3;</code>
-       */
-      public io.greptime.v1.Ddl.AddColumnLocationOrBuilder getLocationOrBuilder() {
-        if (locationBuilder_ != null) {
-          return locationBuilder_.getMessageOrBuilder();
-        } else {
-          return location_ == null ?
-              io.greptime.v1.Ddl.AddColumnLocation.getDefaultInstance() : location_;
-        }
-      }
-      /**
-       * <code>.greptime.v1.AddColumnLocation location = 3;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          io.greptime.v1.Ddl.AddColumnLocation, io.greptime.v1.Ddl.AddColumnLocation.Builder, io.greptime.v1.Ddl.AddColumnLocationOrBuilder> 
-          getLocationFieldBuilder() {
-        if (locationBuilder_ == null) {
-          locationBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              io.greptime.v1.Ddl.AddColumnLocation, io.greptime.v1.Ddl.AddColumnLocation.Builder, io.greptime.v1.Ddl.AddColumnLocationOrBuilder>(
-                  getLocation(),
-                  getParentForChildren(),
-                  isClean());
-          location_ = null;
-        }
-        return locationBuilder_;
-      }
-      @java.lang.Override
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.setUnknownFields(unknownFields);
-      }
-
-      @java.lang.Override
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.mergeUnknownFields(unknownFields);
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:greptime.v1.region.AddColumn)
-    }
-
-    // @@protoc_insertion_point(class_scope:greptime.v1.region.AddColumn)
-    private static final io.greptime.v1.region.Server.AddColumn DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new io.greptime.v1.region.Server.AddColumn();
-    }
-
-    public static io.greptime.v1.region.Server.AddColumn getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<AddColumn>
-        PARSER = new com.google.protobuf.AbstractParser<AddColumn>() {
-      @java.lang.Override
-      public AddColumn parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-        return new AddColumn(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<AddColumn> parser() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<AddColumn> getParserForType() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public io.greptime.v1.region.Server.AddColumn getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
-
-  public interface ChangeColumnTypeOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:greptime.v1.region.ChangeColumnType)
+  public interface AddColumnOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:greptime.v1.region.AddColumn)
       com.google.protobuf.MessageOrBuilder {
 
     /**
-     * <code>string column_name = 1;</code>
-     * @return The columnName.
-     */
-    java.lang.String getColumnName();
-    /**
-     * <code>string column_name = 1;</code>
-     * @return The bytes for columnName.
+     * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
+     * @return Whether the columnDef field is set.
      */
-    com.google.protobuf.ByteString
-        getColumnNameBytes();
-
+    boolean hasColumnDef();
     /**
-     * <code>.greptime.v1.ColumnDataType target_type = 2;</code>
-     * @return The enum numeric value on the wire for targetType.
+     * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
+     * @return The columnDef.
      */
-    int getTargetTypeValue();
+    io.greptime.v1.region.Server.RegionColumnDef getColumnDef();
     /**
-     * <code>.greptime.v1.ColumnDataType target_type = 2;</code>
-     * @return The targetType.
+     * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
      */
-    io.greptime.v1.Common.ColumnDataType getTargetType();
+    io.greptime.v1.region.Server.RegionColumnDefOrBuilder getColumnDefOrBuilder();
 
     /**
-     * <code>.greptime.v1.ColumnDataTypeExtension target_type_extension = 3;</code>
-     * @return Whether the targetTypeExtension field is set.
+     * <code>.greptime.v1.AddColumnLocation location = 3;</code>
+     * @return Whether the location field is set.
      */
-    boolean hasTargetTypeExtension();
+    boolean hasLocation();
     /**
-     * <code>.greptime.v1.ColumnDataTypeExtension target_type_extension = 3;</code>
-     * @return The targetTypeExtension.
+     * <code>.greptime.v1.AddColumnLocation location = 3;</code>
+     * @return The location.
      */
-    io.greptime.v1.Common.ColumnDataTypeExtension getTargetTypeExtension();
+    io.greptime.v1.Ddl.AddColumnLocation getLocation();
     /**
-     * <code>.greptime.v1.ColumnDataTypeExtension target_type_extension = 3;</code>
+     * <code>.greptime.v1.AddColumnLocation location = 3;</code>
      */
-    io.greptime.v1.Common.ColumnDataTypeExtensionOrBuilder getTargetTypeExtensionOrBuilder();
+    io.greptime.v1.Ddl.AddColumnLocationOrBuilder getLocationOrBuilder();
   }
   /**
-   * Protobuf type {@code greptime.v1.region.ChangeColumnType}
+   * Protobuf type {@code greptime.v1.region.AddColumn}
    */
-  public static final class ChangeColumnType extends
+  public static final class AddColumn extends
       com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:greptime.v1.region.ChangeColumnType)
-      ChangeColumnTypeOrBuilder {
+      // @@protoc_insertion_point(message_implements:greptime.v1.region.AddColumn)
+      AddColumnOrBuilder {
   private static final long serialVersionUID = 0L;
-    // Use ChangeColumnType.newBuilder() to construct.
-    private ChangeColumnType(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    // Use AddColumn.newBuilder() to construct.
+    private AddColumn(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
       super(builder);
     }
-    private ChangeColumnType() {
-      columnName_ = "";
-      targetType_ = 0;
+    private AddColumn() {
     }
 
     @java.lang.Override
     @SuppressWarnings({"unused"})
     protected java.lang.Object newInstance(
         UnusedPrivateParameter unused) {
-      return new ChangeColumnType();
+      return new AddColumn();
     }
 
     @java.lang.Override
@@ -20926,7 +19295,7 @@ protected java.lang.Object newInstance(
     getUnknownFields() {
       return this.unknownFields;
     }
-    private ChangeColumnType(
+    private AddColumn(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
@@ -20945,26 +19314,27 @@ private ChangeColumnType(
               done = true;
               break;
             case 10: {
-              java.lang.String s = input.readStringRequireUtf8();
-
-              columnName_ = s;
-              break;
-            }
-            case 16: {
-              int rawValue = input.readEnum();
+              io.greptime.v1.region.Server.RegionColumnDef.Builder subBuilder = null;
+              if (columnDef_ != null) {
+                subBuilder = columnDef_.toBuilder();
+              }
+              columnDef_ = input.readMessage(io.greptime.v1.region.Server.RegionColumnDef.parser(), extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(columnDef_);
+                columnDef_ = subBuilder.buildPartial();
+              }
 
-              targetType_ = rawValue;
               break;
             }
             case 26: {
-              io.greptime.v1.Common.ColumnDataTypeExtension.Builder subBuilder = null;
-              if (targetTypeExtension_ != null) {
-                subBuilder = targetTypeExtension_.toBuilder();
+              io.greptime.v1.Ddl.AddColumnLocation.Builder subBuilder = null;
+              if (location_ != null) {
+                subBuilder = location_.toBuilder();
               }
-              targetTypeExtension_ = input.readMessage(io.greptime.v1.Common.ColumnDataTypeExtension.parser(), extensionRegistry);
+              location_ = input.readMessage(io.greptime.v1.Ddl.AddColumnLocation.parser(), extensionRegistry);
               if (subBuilder != null) {
-                subBuilder.mergeFrom(targetTypeExtension_);
-                targetTypeExtension_ = subBuilder.buildPartial();
+                subBuilder.mergeFrom(location_);
+                location_ = subBuilder.buildPartial();
               }
 
               break;
@@ -20992,98 +19362,67 @@ private ChangeColumnType(
     }
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return io.greptime.v1.region.Server.internal_static_greptime_v1_region_ChangeColumnType_descriptor;
+      return io.greptime.v1.region.Server.internal_static_greptime_v1_region_AddColumn_descriptor;
     }
 
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return io.greptime.v1.region.Server.internal_static_greptime_v1_region_ChangeColumnType_fieldAccessorTable
+      return io.greptime.v1.region.Server.internal_static_greptime_v1_region_AddColumn_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              io.greptime.v1.region.Server.ChangeColumnType.class, io.greptime.v1.region.Server.ChangeColumnType.Builder.class);
+              io.greptime.v1.region.Server.AddColumn.class, io.greptime.v1.region.Server.AddColumn.Builder.class);
     }
 
-    public static final int COLUMN_NAME_FIELD_NUMBER = 1;
-    private volatile java.lang.Object columnName_;
+    public static final int COLUMN_DEF_FIELD_NUMBER = 1;
+    private io.greptime.v1.region.Server.RegionColumnDef columnDef_;
     /**
-     * <code>string column_name = 1;</code>
-     * @return The columnName.
+     * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
+     * @return Whether the columnDef field is set.
      */
     @java.lang.Override
-    public java.lang.String getColumnName() {
-      java.lang.Object ref = columnName_;
-      if (ref instanceof java.lang.String) {
-        return (java.lang.String) ref;
-      } else {
-        com.google.protobuf.ByteString bs = 
-            (com.google.protobuf.ByteString) ref;
-        java.lang.String s = bs.toStringUtf8();
-        columnName_ = s;
-        return s;
-      }
+    public boolean hasColumnDef() {
+      return columnDef_ != null;
     }
     /**
-     * <code>string column_name = 1;</code>
-     * @return The bytes for columnName.
+     * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
+     * @return The columnDef.
      */
     @java.lang.Override
-    public com.google.protobuf.ByteString
-        getColumnNameBytes() {
-      java.lang.Object ref = columnName_;
-      if (ref instanceof java.lang.String) {
-        com.google.protobuf.ByteString b = 
-            com.google.protobuf.ByteString.copyFromUtf8(
-                (java.lang.String) ref);
-        columnName_ = b;
-        return b;
-      } else {
-        return (com.google.protobuf.ByteString) ref;
-      }
-    }
-
-    public static final int TARGET_TYPE_FIELD_NUMBER = 2;
-    private int targetType_;
-    /**
-     * <code>.greptime.v1.ColumnDataType target_type = 2;</code>
-     * @return The enum numeric value on the wire for targetType.
-     */
-    @java.lang.Override public int getTargetTypeValue() {
-      return targetType_;
+    public io.greptime.v1.region.Server.RegionColumnDef getColumnDef() {
+      return columnDef_ == null ? io.greptime.v1.region.Server.RegionColumnDef.getDefaultInstance() : columnDef_;
     }
     /**
-     * <code>.greptime.v1.ColumnDataType target_type = 2;</code>
-     * @return The targetType.
+     * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
      */
-    @java.lang.Override public io.greptime.v1.Common.ColumnDataType getTargetType() {
-      @SuppressWarnings("deprecation")
-      io.greptime.v1.Common.ColumnDataType result = io.greptime.v1.Common.ColumnDataType.valueOf(targetType_);
-      return result == null ? io.greptime.v1.Common.ColumnDataType.UNRECOGNIZED : result;
+    @java.lang.Override
+    public io.greptime.v1.region.Server.RegionColumnDefOrBuilder getColumnDefOrBuilder() {
+      return getColumnDef();
     }
 
-    public static final int TARGET_TYPE_EXTENSION_FIELD_NUMBER = 3;
-    private io.greptime.v1.Common.ColumnDataTypeExtension targetTypeExtension_;
+    public static final int LOCATION_FIELD_NUMBER = 3;
+    private io.greptime.v1.Ddl.AddColumnLocation location_;
     /**
-     * <code>.greptime.v1.ColumnDataTypeExtension target_type_extension = 3;</code>
-     * @return Whether the targetTypeExtension field is set.
+     * <code>.greptime.v1.AddColumnLocation location = 3;</code>
+     * @return Whether the location field is set.
      */
     @java.lang.Override
-    public boolean hasTargetTypeExtension() {
-      return targetTypeExtension_ != null;
+    public boolean hasLocation() {
+      return location_ != null;
     }
     /**
-     * <code>.greptime.v1.ColumnDataTypeExtension target_type_extension = 3;</code>
-     * @return The targetTypeExtension.
+     * <code>.greptime.v1.AddColumnLocation location = 3;</code>
+     * @return The location.
      */
     @java.lang.Override
-    public io.greptime.v1.Common.ColumnDataTypeExtension getTargetTypeExtension() {
-      return targetTypeExtension_ == null ? io.greptime.v1.Common.ColumnDataTypeExtension.getDefaultInstance() : targetTypeExtension_;
+    public io.greptime.v1.Ddl.AddColumnLocation getLocation() {
+      return location_ == null ? io.greptime.v1.Ddl.AddColumnLocation.getDefaultInstance() : location_;
     }
     /**
-     * <code>.greptime.v1.ColumnDataTypeExtension target_type_extension = 3;</code>
+     * <code>.greptime.v1.AddColumnLocation location = 3;</code>
      */
     @java.lang.Override
-    public io.greptime.v1.Common.ColumnDataTypeExtensionOrBuilder getTargetTypeExtensionOrBuilder() {
-      return getTargetTypeExtension();
+    public io.greptime.v1.Ddl.AddColumnLocationOrBuilder getLocationOrBuilder() {
+      return getLocation();
     }
 
     private byte memoizedIsInitialized = -1;
@@ -21100,14 +19439,11 @@ public final boolean isInitialized() {
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output)
                         throws java.io.IOException {
-      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(columnName_)) {
-        com.google.protobuf.GeneratedMessageV3.writeString(output, 1, columnName_);
-      }
-      if (targetType_ != io.greptime.v1.Common.ColumnDataType.BOOLEAN.getNumber()) {
-        output.writeEnum(2, targetType_);
+      if (columnDef_ != null) {
+        output.writeMessage(1, getColumnDef());
       }
-      if (targetTypeExtension_ != null) {
-        output.writeMessage(3, getTargetTypeExtension());
+      if (location_ != null) {
+        output.writeMessage(3, getLocation());
       }
       unknownFields.writeTo(output);
     }
@@ -21118,16 +19454,13 @@ public int getSerializedSize() {
       if (size != -1) return size;
 
       size = 0;
-      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(columnName_)) {
-        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, columnName_);
-      }
-      if (targetType_ != io.greptime.v1.Common.ColumnDataType.BOOLEAN.getNumber()) {
+      if (columnDef_ != null) {
         size += com.google.protobuf.CodedOutputStream
-          .computeEnumSize(2, targetType_);
+          .computeMessageSize(1, getColumnDef());
       }
-      if (targetTypeExtension_ != null) {
+      if (location_ != null) {
         size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(3, getTargetTypeExtension());
+          .computeMessageSize(3, getLocation());
       }
       size += unknownFields.getSerializedSize();
       memoizedSize = size;
@@ -21139,18 +19472,20 @@ public boolean equals(final java.lang.Object obj) {
       if (obj == this) {
        return true;
       }
-      if (!(obj instanceof io.greptime.v1.region.Server.ChangeColumnType)) {
+      if (!(obj instanceof io.greptime.v1.region.Server.AddColumn)) {
         return super.equals(obj);
       }
-      io.greptime.v1.region.Server.ChangeColumnType other = (io.greptime.v1.region.Server.ChangeColumnType) obj;
+      io.greptime.v1.region.Server.AddColumn other = (io.greptime.v1.region.Server.AddColumn) obj;
 
-      if (!getColumnName()
-          .equals(other.getColumnName())) return false;
-      if (targetType_ != other.targetType_) return false;
-      if (hasTargetTypeExtension() != other.hasTargetTypeExtension()) return false;
-      if (hasTargetTypeExtension()) {
-        if (!getTargetTypeExtension()
-            .equals(other.getTargetTypeExtension())) return false;
+      if (hasColumnDef() != other.hasColumnDef()) return false;
+      if (hasColumnDef()) {
+        if (!getColumnDef()
+            .equals(other.getColumnDef())) return false;
+      }
+      if (hasLocation() != other.hasLocation()) return false;
+      if (hasLocation()) {
+        if (!getLocation()
+            .equals(other.getLocation())) return false;
       }
       if (!unknownFields.equals(other.unknownFields)) return false;
       return true;
@@ -21163,82 +19498,82 @@ public int hashCode() {
       }
       int hash = 41;
       hash = (19 * hash) + getDescriptor().hashCode();
-      hash = (37 * hash) + COLUMN_NAME_FIELD_NUMBER;
-      hash = (53 * hash) + getColumnName().hashCode();
-      hash = (37 * hash) + TARGET_TYPE_FIELD_NUMBER;
-      hash = (53 * hash) + targetType_;
-      if (hasTargetTypeExtension()) {
-        hash = (37 * hash) + TARGET_TYPE_EXTENSION_FIELD_NUMBER;
-        hash = (53 * hash) + getTargetTypeExtension().hashCode();
+      if (hasColumnDef()) {
+        hash = (37 * hash) + COLUMN_DEF_FIELD_NUMBER;
+        hash = (53 * hash) + getColumnDef().hashCode();
+      }
+      if (hasLocation()) {
+        hash = (37 * hash) + LOCATION_FIELD_NUMBER;
+        hash = (53 * hash) + getLocation().hashCode();
       }
       hash = (29 * hash) + unknownFields.hashCode();
       memoizedHashCode = hash;
       return hash;
     }
 
-    public static io.greptime.v1.region.Server.ChangeColumnType parseFrom(
+    public static io.greptime.v1.region.Server.AddColumn parseFrom(
         java.nio.ByteBuffer data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static io.greptime.v1.region.Server.ChangeColumnType parseFrom(
+    public static io.greptime.v1.region.Server.AddColumn parseFrom(
         java.nio.ByteBuffer data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static io.greptime.v1.region.Server.ChangeColumnType parseFrom(
+    public static io.greptime.v1.region.Server.AddColumn parseFrom(
         com.google.protobuf.ByteString data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static io.greptime.v1.region.Server.ChangeColumnType parseFrom(
+    public static io.greptime.v1.region.Server.AddColumn parseFrom(
         com.google.protobuf.ByteString data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static io.greptime.v1.region.Server.ChangeColumnType parseFrom(byte[] data)
+    public static io.greptime.v1.region.Server.AddColumn parseFrom(byte[] data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static io.greptime.v1.region.Server.ChangeColumnType parseFrom(
+    public static io.greptime.v1.region.Server.AddColumn parseFrom(
         byte[] data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static io.greptime.v1.region.Server.ChangeColumnType parseFrom(java.io.InputStream input)
+    public static io.greptime.v1.region.Server.AddColumn parseFrom(java.io.InputStream input)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseWithIOException(PARSER, input);
     }
-    public static io.greptime.v1.region.Server.ChangeColumnType parseFrom(
+    public static io.greptime.v1.region.Server.AddColumn parseFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseWithIOException(PARSER, input, extensionRegistry);
     }
-    public static io.greptime.v1.region.Server.ChangeColumnType parseDelimitedFrom(java.io.InputStream input)
+    public static io.greptime.v1.region.Server.AddColumn parseDelimitedFrom(java.io.InputStream input)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseDelimitedWithIOException(PARSER, input);
     }
-    public static io.greptime.v1.region.Server.ChangeColumnType parseDelimitedFrom(
+    public static io.greptime.v1.region.Server.AddColumn parseDelimitedFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
     }
-    public static io.greptime.v1.region.Server.ChangeColumnType parseFrom(
+    public static io.greptime.v1.region.Server.AddColumn parseFrom(
         com.google.protobuf.CodedInputStream input)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseWithIOException(PARSER, input);
     }
-    public static io.greptime.v1.region.Server.ChangeColumnType parseFrom(
+    public static io.greptime.v1.region.Server.AddColumn parseFrom(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
@@ -21251,7 +19586,7 @@ public static io.greptime.v1.region.Server.ChangeColumnType parseFrom(
     public static Builder newBuilder() {
       return DEFAULT_INSTANCE.toBuilder();
     }
-    public static Builder newBuilder(io.greptime.v1.region.Server.ChangeColumnType prototype) {
+    public static Builder newBuilder(io.greptime.v1.region.Server.AddColumn prototype) {
       return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
     }
     @java.lang.Override
@@ -21267,26 +19602,26 @@ protected Builder newBuilderForType(
       return builder;
     }
     /**
-     * Protobuf type {@code greptime.v1.region.ChangeColumnType}
+     * Protobuf type {@code greptime.v1.region.AddColumn}
      */
     public static final class Builder extends
         com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:greptime.v1.region.ChangeColumnType)
-        io.greptime.v1.region.Server.ChangeColumnTypeOrBuilder {
+        // @@protoc_insertion_point(builder_implements:greptime.v1.region.AddColumn)
+        io.greptime.v1.region.Server.AddColumnOrBuilder {
       public static final com.google.protobuf.Descriptors.Descriptor
           getDescriptor() {
-        return io.greptime.v1.region.Server.internal_static_greptime_v1_region_ChangeColumnType_descriptor;
+        return io.greptime.v1.region.Server.internal_static_greptime_v1_region_AddColumn_descriptor;
       }
 
       @java.lang.Override
       protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
           internalGetFieldAccessorTable() {
-        return io.greptime.v1.region.Server.internal_static_greptime_v1_region_ChangeColumnType_fieldAccessorTable
+        return io.greptime.v1.region.Server.internal_static_greptime_v1_region_AddColumn_fieldAccessorTable
             .ensureFieldAccessorsInitialized(
-                io.greptime.v1.region.Server.ChangeColumnType.class, io.greptime.v1.region.Server.ChangeColumnType.Builder.class);
+                io.greptime.v1.region.Server.AddColumn.class, io.greptime.v1.region.Server.AddColumn.Builder.class);
       }
 
-      // Construct using io.greptime.v1.region.Server.ChangeColumnType.newBuilder()
+      // Construct using io.greptime.v1.region.Server.AddColumn.newBuilder()
       private Builder() {
         maybeForceBuilderInitialization();
       }
@@ -21300,19 +19635,21 @@ private void maybeForceBuilderInitialization() {
         if (com.google.protobuf.GeneratedMessageV3
                 .alwaysUseFieldBuilders) {
         }
-      }
-      @java.lang.Override
-      public Builder clear() {
-        super.clear();
-        columnName_ = "";
-
-        targetType_ = 0;
-
-        if (targetTypeExtensionBuilder_ == null) {
-          targetTypeExtension_ = null;
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        if (columnDefBuilder_ == null) {
+          columnDef_ = null;
+        } else {
+          columnDef_ = null;
+          columnDefBuilder_ = null;
+        }
+        if (locationBuilder_ == null) {
+          location_ = null;
         } else {
-          targetTypeExtension_ = null;
-          targetTypeExtensionBuilder_ = null;
+          location_ = null;
+          locationBuilder_ = null;
         }
         return this;
       }
@@ -21320,17 +19657,17 @@ public Builder clear() {
       @java.lang.Override
       public com.google.protobuf.Descriptors.Descriptor
           getDescriptorForType() {
-        return io.greptime.v1.region.Server.internal_static_greptime_v1_region_ChangeColumnType_descriptor;
+        return io.greptime.v1.region.Server.internal_static_greptime_v1_region_AddColumn_descriptor;
       }
 
       @java.lang.Override
-      public io.greptime.v1.region.Server.ChangeColumnType getDefaultInstanceForType() {
-        return io.greptime.v1.region.Server.ChangeColumnType.getDefaultInstance();
+      public io.greptime.v1.region.Server.AddColumn getDefaultInstanceForType() {
+        return io.greptime.v1.region.Server.AddColumn.getDefaultInstance();
       }
 
       @java.lang.Override
-      public io.greptime.v1.region.Server.ChangeColumnType build() {
-        io.greptime.v1.region.Server.ChangeColumnType result = buildPartial();
+      public io.greptime.v1.region.Server.AddColumn build() {
+        io.greptime.v1.region.Server.AddColumn result = buildPartial();
         if (!result.isInitialized()) {
           throw newUninitializedMessageException(result);
         }
@@ -21338,14 +19675,17 @@ public io.greptime.v1.region.Server.ChangeColumnType build() {
       }
 
       @java.lang.Override
-      public io.greptime.v1.region.Server.ChangeColumnType buildPartial() {
-        io.greptime.v1.region.Server.ChangeColumnType result = new io.greptime.v1.region.Server.ChangeColumnType(this);
-        result.columnName_ = columnName_;
-        result.targetType_ = targetType_;
-        if (targetTypeExtensionBuilder_ == null) {
-          result.targetTypeExtension_ = targetTypeExtension_;
+      public io.greptime.v1.region.Server.AddColumn buildPartial() {
+        io.greptime.v1.region.Server.AddColumn result = new io.greptime.v1.region.Server.AddColumn(this);
+        if (columnDefBuilder_ == null) {
+          result.columnDef_ = columnDef_;
+        } else {
+          result.columnDef_ = columnDefBuilder_.build();
+        }
+        if (locationBuilder_ == null) {
+          result.location_ = location_;
         } else {
-          result.targetTypeExtension_ = targetTypeExtensionBuilder_.build();
+          result.location_ = locationBuilder_.build();
         }
         onBuilt();
         return result;
@@ -21385,25 +19725,21 @@ public Builder addRepeatedField(
       }
       @java.lang.Override
       public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof io.greptime.v1.region.Server.ChangeColumnType) {
-          return mergeFrom((io.greptime.v1.region.Server.ChangeColumnType)other);
+        if (other instanceof io.greptime.v1.region.Server.AddColumn) {
+          return mergeFrom((io.greptime.v1.region.Server.AddColumn)other);
         } else {
           super.mergeFrom(other);
           return this;
         }
       }
 
-      public Builder mergeFrom(io.greptime.v1.region.Server.ChangeColumnType other) {
-        if (other == io.greptime.v1.region.Server.ChangeColumnType.getDefaultInstance()) return this;
-        if (!other.getColumnName().isEmpty()) {
-          columnName_ = other.columnName_;
-          onChanged();
-        }
-        if (other.targetType_ != 0) {
-          setTargetTypeValue(other.getTargetTypeValue());
+      public Builder mergeFrom(io.greptime.v1.region.Server.AddColumn other) {
+        if (other == io.greptime.v1.region.Server.AddColumn.getDefaultInstance()) return this;
+        if (other.hasColumnDef()) {
+          mergeColumnDef(other.getColumnDef());
         }
-        if (other.hasTargetTypeExtension()) {
-          mergeTargetTypeExtension(other.getTargetTypeExtension());
+        if (other.hasLocation()) {
+          mergeLocation(other.getLocation());
         }
         this.mergeUnknownFields(other.unknownFields);
         onChanged();
@@ -21420,11 +19756,11 @@ public Builder mergeFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws java.io.IOException {
-        io.greptime.v1.region.Server.ChangeColumnType parsedMessage = null;
+        io.greptime.v1.region.Server.AddColumn parsedMessage = null;
         try {
           parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
         } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (io.greptime.v1.region.Server.ChangeColumnType) e.getUnfinishedMessage();
+          parsedMessage = (io.greptime.v1.region.Server.AddColumn) e.getUnfinishedMessage();
           throw e.unwrapIOException();
         } finally {
           if (parsedMessage != null) {
@@ -21434,253 +19770,242 @@ public Builder mergeFrom(
         return this;
       }
 
-      private java.lang.Object columnName_ = "";
+      private io.greptime.v1.region.Server.RegionColumnDef columnDef_;
+      private com.google.protobuf.SingleFieldBuilderV3<
+          io.greptime.v1.region.Server.RegionColumnDef, io.greptime.v1.region.Server.RegionColumnDef.Builder, io.greptime.v1.region.Server.RegionColumnDefOrBuilder> columnDefBuilder_;
       /**
-       * <code>string column_name = 1;</code>
-       * @return The columnName.
+       * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
+       * @return Whether the columnDef field is set.
        */
-      public java.lang.String getColumnName() {
-        java.lang.Object ref = columnName_;
-        if (!(ref instanceof java.lang.String)) {
-          com.google.protobuf.ByteString bs =
-              (com.google.protobuf.ByteString) ref;
-          java.lang.String s = bs.toStringUtf8();
-          columnName_ = s;
-          return s;
-        } else {
-          return (java.lang.String) ref;
-        }
+      public boolean hasColumnDef() {
+        return columnDefBuilder_ != null || columnDef_ != null;
       }
       /**
-       * <code>string column_name = 1;</code>
-       * @return The bytes for columnName.
+       * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
+       * @return The columnDef.
        */
-      public com.google.protobuf.ByteString
-          getColumnNameBytes() {
-        java.lang.Object ref = columnName_;
-        if (ref instanceof String) {
-          com.google.protobuf.ByteString b = 
-              com.google.protobuf.ByteString.copyFromUtf8(
-                  (java.lang.String) ref);
-          columnName_ = b;
-          return b;
+      public io.greptime.v1.region.Server.RegionColumnDef getColumnDef() {
+        if (columnDefBuilder_ == null) {
+          return columnDef_ == null ? io.greptime.v1.region.Server.RegionColumnDef.getDefaultInstance() : columnDef_;
         } else {
-          return (com.google.protobuf.ByteString) ref;
+          return columnDefBuilder_.getMessage();
         }
       }
       /**
-       * <code>string column_name = 1;</code>
-       * @param value The columnName to set.
-       * @return This builder for chaining.
+       * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
        */
-      public Builder setColumnName(
-          java.lang.String value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  
-        columnName_ = value;
-        onChanged();
+      public Builder setColumnDef(io.greptime.v1.region.Server.RegionColumnDef value) {
+        if (columnDefBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          columnDef_ = value;
+          onChanged();
+        } else {
+          columnDefBuilder_.setMessage(value);
+        }
+
         return this;
       }
       /**
-       * <code>string column_name = 1;</code>
-       * @return This builder for chaining.
+       * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
        */
-      public Builder clearColumnName() {
-        
-        columnName_ = getDefaultInstance().getColumnName();
-        onChanged();
+      public Builder setColumnDef(
+          io.greptime.v1.region.Server.RegionColumnDef.Builder builderForValue) {
+        if (columnDefBuilder_ == null) {
+          columnDef_ = builderForValue.build();
+          onChanged();
+        } else {
+          columnDefBuilder_.setMessage(builderForValue.build());
+        }
+
         return this;
       }
       /**
-       * <code>string column_name = 1;</code>
-       * @param value The bytes for columnName to set.
-       * @return This builder for chaining.
+       * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
        */
-      public Builder setColumnNameBytes(
-          com.google.protobuf.ByteString value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  checkByteStringIsUtf8(value);
-        
-        columnName_ = value;
-        onChanged();
+      public Builder mergeColumnDef(io.greptime.v1.region.Server.RegionColumnDef value) {
+        if (columnDefBuilder_ == null) {
+          if (columnDef_ != null) {
+            columnDef_ =
+              io.greptime.v1.region.Server.RegionColumnDef.newBuilder(columnDef_).mergeFrom(value).buildPartial();
+          } else {
+            columnDef_ = value;
+          }
+          onChanged();
+        } else {
+          columnDefBuilder_.mergeFrom(value);
+        }
+
         return this;
       }
-
-      private int targetType_ = 0;
       /**
-       * <code>.greptime.v1.ColumnDataType target_type = 2;</code>
-       * @return The enum numeric value on the wire for targetType.
+       * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
        */
-      @java.lang.Override public int getTargetTypeValue() {
-        return targetType_;
+      public Builder clearColumnDef() {
+        if (columnDefBuilder_ == null) {
+          columnDef_ = null;
+          onChanged();
+        } else {
+          columnDef_ = null;
+          columnDefBuilder_ = null;
+        }
+
+        return this;
       }
       /**
-       * <code>.greptime.v1.ColumnDataType target_type = 2;</code>
-       * @param value The enum numeric value on the wire for targetType to set.
-       * @return This builder for chaining.
+       * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
        */
-      public Builder setTargetTypeValue(int value) {
+      public io.greptime.v1.region.Server.RegionColumnDef.Builder getColumnDefBuilder() {
         
-        targetType_ = value;
         onChanged();
-        return this;
-      }
-      /**
-       * <code>.greptime.v1.ColumnDataType target_type = 2;</code>
-       * @return The targetType.
-       */
-      @java.lang.Override
-      public io.greptime.v1.Common.ColumnDataType getTargetType() {
-        @SuppressWarnings("deprecation")
-        io.greptime.v1.Common.ColumnDataType result = io.greptime.v1.Common.ColumnDataType.valueOf(targetType_);
-        return result == null ? io.greptime.v1.Common.ColumnDataType.UNRECOGNIZED : result;
+        return getColumnDefFieldBuilder().getBuilder();
       }
       /**
-       * <code>.greptime.v1.ColumnDataType target_type = 2;</code>
-       * @param value The targetType to set.
-       * @return This builder for chaining.
+       * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
        */
-      public Builder setTargetType(io.greptime.v1.Common.ColumnDataType value) {
-        if (value == null) {
-          throw new NullPointerException();
+      public io.greptime.v1.region.Server.RegionColumnDefOrBuilder getColumnDefOrBuilder() {
+        if (columnDefBuilder_ != null) {
+          return columnDefBuilder_.getMessageOrBuilder();
+        } else {
+          return columnDef_ == null ?
+              io.greptime.v1.region.Server.RegionColumnDef.getDefaultInstance() : columnDef_;
         }
-        
-        targetType_ = value.getNumber();
-        onChanged();
-        return this;
       }
       /**
-       * <code>.greptime.v1.ColumnDataType target_type = 2;</code>
-       * @return This builder for chaining.
+       * <code>.greptime.v1.region.RegionColumnDef column_def = 1;</code>
        */
-      public Builder clearTargetType() {
-        
-        targetType_ = 0;
-        onChanged();
-        return this;
+      private com.google.protobuf.SingleFieldBuilderV3<
+          io.greptime.v1.region.Server.RegionColumnDef, io.greptime.v1.region.Server.RegionColumnDef.Builder, io.greptime.v1.region.Server.RegionColumnDefOrBuilder> 
+          getColumnDefFieldBuilder() {
+        if (columnDefBuilder_ == null) {
+          columnDefBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
+              io.greptime.v1.region.Server.RegionColumnDef, io.greptime.v1.region.Server.RegionColumnDef.Builder, io.greptime.v1.region.Server.RegionColumnDefOrBuilder>(
+                  getColumnDef(),
+                  getParentForChildren(),
+                  isClean());
+          columnDef_ = null;
+        }
+        return columnDefBuilder_;
       }
 
-      private io.greptime.v1.Common.ColumnDataTypeExtension targetTypeExtension_;
+      private io.greptime.v1.Ddl.AddColumnLocation location_;
       private com.google.protobuf.SingleFieldBuilderV3<
-          io.greptime.v1.Common.ColumnDataTypeExtension, io.greptime.v1.Common.ColumnDataTypeExtension.Builder, io.greptime.v1.Common.ColumnDataTypeExtensionOrBuilder> targetTypeExtensionBuilder_;
+          io.greptime.v1.Ddl.AddColumnLocation, io.greptime.v1.Ddl.AddColumnLocation.Builder, io.greptime.v1.Ddl.AddColumnLocationOrBuilder> locationBuilder_;
       /**
-       * <code>.greptime.v1.ColumnDataTypeExtension target_type_extension = 3;</code>
-       * @return Whether the targetTypeExtension field is set.
+       * <code>.greptime.v1.AddColumnLocation location = 3;</code>
+       * @return Whether the location field is set.
        */
-      public boolean hasTargetTypeExtension() {
-        return targetTypeExtensionBuilder_ != null || targetTypeExtension_ != null;
+      public boolean hasLocation() {
+        return locationBuilder_ != null || location_ != null;
       }
       /**
-       * <code>.greptime.v1.ColumnDataTypeExtension target_type_extension = 3;</code>
-       * @return The targetTypeExtension.
+       * <code>.greptime.v1.AddColumnLocation location = 3;</code>
+       * @return The location.
        */
-      public io.greptime.v1.Common.ColumnDataTypeExtension getTargetTypeExtension() {
-        if (targetTypeExtensionBuilder_ == null) {
-          return targetTypeExtension_ == null ? io.greptime.v1.Common.ColumnDataTypeExtension.getDefaultInstance() : targetTypeExtension_;
+      public io.greptime.v1.Ddl.AddColumnLocation getLocation() {
+        if (locationBuilder_ == null) {
+          return location_ == null ? io.greptime.v1.Ddl.AddColumnLocation.getDefaultInstance() : location_;
         } else {
-          return targetTypeExtensionBuilder_.getMessage();
+          return locationBuilder_.getMessage();
         }
       }
       /**
-       * <code>.greptime.v1.ColumnDataTypeExtension target_type_extension = 3;</code>
+       * <code>.greptime.v1.AddColumnLocation location = 3;</code>
        */
-      public Builder setTargetTypeExtension(io.greptime.v1.Common.ColumnDataTypeExtension value) {
-        if (targetTypeExtensionBuilder_ == null) {
+      public Builder setLocation(io.greptime.v1.Ddl.AddColumnLocation value) {
+        if (locationBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
           }
-          targetTypeExtension_ = value;
+          location_ = value;
           onChanged();
         } else {
-          targetTypeExtensionBuilder_.setMessage(value);
+          locationBuilder_.setMessage(value);
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.ColumnDataTypeExtension target_type_extension = 3;</code>
+       * <code>.greptime.v1.AddColumnLocation location = 3;</code>
        */
-      public Builder setTargetTypeExtension(
-          io.greptime.v1.Common.ColumnDataTypeExtension.Builder builderForValue) {
-        if (targetTypeExtensionBuilder_ == null) {
-          targetTypeExtension_ = builderForValue.build();
+      public Builder setLocation(
+          io.greptime.v1.Ddl.AddColumnLocation.Builder builderForValue) {
+        if (locationBuilder_ == null) {
+          location_ = builderForValue.build();
           onChanged();
         } else {
-          targetTypeExtensionBuilder_.setMessage(builderForValue.build());
+          locationBuilder_.setMessage(builderForValue.build());
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.ColumnDataTypeExtension target_type_extension = 3;</code>
+       * <code>.greptime.v1.AddColumnLocation location = 3;</code>
        */
-      public Builder mergeTargetTypeExtension(io.greptime.v1.Common.ColumnDataTypeExtension value) {
-        if (targetTypeExtensionBuilder_ == null) {
-          if (targetTypeExtension_ != null) {
-            targetTypeExtension_ =
-              io.greptime.v1.Common.ColumnDataTypeExtension.newBuilder(targetTypeExtension_).mergeFrom(value).buildPartial();
+      public Builder mergeLocation(io.greptime.v1.Ddl.AddColumnLocation value) {
+        if (locationBuilder_ == null) {
+          if (location_ != null) {
+            location_ =
+              io.greptime.v1.Ddl.AddColumnLocation.newBuilder(location_).mergeFrom(value).buildPartial();
           } else {
-            targetTypeExtension_ = value;
+            location_ = value;
           }
           onChanged();
         } else {
-          targetTypeExtensionBuilder_.mergeFrom(value);
+          locationBuilder_.mergeFrom(value);
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.ColumnDataTypeExtension target_type_extension = 3;</code>
+       * <code>.greptime.v1.AddColumnLocation location = 3;</code>
        */
-      public Builder clearTargetTypeExtension() {
-        if (targetTypeExtensionBuilder_ == null) {
-          targetTypeExtension_ = null;
+      public Builder clearLocation() {
+        if (locationBuilder_ == null) {
+          location_ = null;
           onChanged();
         } else {
-          targetTypeExtension_ = null;
-          targetTypeExtensionBuilder_ = null;
+          location_ = null;
+          locationBuilder_ = null;
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.ColumnDataTypeExtension target_type_extension = 3;</code>
+       * <code>.greptime.v1.AddColumnLocation location = 3;</code>
        */
-      public io.greptime.v1.Common.ColumnDataTypeExtension.Builder getTargetTypeExtensionBuilder() {
+      public io.greptime.v1.Ddl.AddColumnLocation.Builder getLocationBuilder() {
         
         onChanged();
-        return getTargetTypeExtensionFieldBuilder().getBuilder();
+        return getLocationFieldBuilder().getBuilder();
       }
       /**
-       * <code>.greptime.v1.ColumnDataTypeExtension target_type_extension = 3;</code>
+       * <code>.greptime.v1.AddColumnLocation location = 3;</code>
        */
-      public io.greptime.v1.Common.ColumnDataTypeExtensionOrBuilder getTargetTypeExtensionOrBuilder() {
-        if (targetTypeExtensionBuilder_ != null) {
-          return targetTypeExtensionBuilder_.getMessageOrBuilder();
+      public io.greptime.v1.Ddl.AddColumnLocationOrBuilder getLocationOrBuilder() {
+        if (locationBuilder_ != null) {
+          return locationBuilder_.getMessageOrBuilder();
         } else {
-          return targetTypeExtension_ == null ?
-              io.greptime.v1.Common.ColumnDataTypeExtension.getDefaultInstance() : targetTypeExtension_;
+          return location_ == null ?
+              io.greptime.v1.Ddl.AddColumnLocation.getDefaultInstance() : location_;
         }
       }
       /**
-       * <code>.greptime.v1.ColumnDataTypeExtension target_type_extension = 3;</code>
+       * <code>.greptime.v1.AddColumnLocation location = 3;</code>
        */
       private com.google.protobuf.SingleFieldBuilderV3<
-          io.greptime.v1.Common.ColumnDataTypeExtension, io.greptime.v1.Common.ColumnDataTypeExtension.Builder, io.greptime.v1.Common.ColumnDataTypeExtensionOrBuilder> 
-          getTargetTypeExtensionFieldBuilder() {
-        if (targetTypeExtensionBuilder_ == null) {
-          targetTypeExtensionBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              io.greptime.v1.Common.ColumnDataTypeExtension, io.greptime.v1.Common.ColumnDataTypeExtension.Builder, io.greptime.v1.Common.ColumnDataTypeExtensionOrBuilder>(
-                  getTargetTypeExtension(),
+          io.greptime.v1.Ddl.AddColumnLocation, io.greptime.v1.Ddl.AddColumnLocation.Builder, io.greptime.v1.Ddl.AddColumnLocationOrBuilder> 
+          getLocationFieldBuilder() {
+        if (locationBuilder_ == null) {
+          locationBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
+              io.greptime.v1.Ddl.AddColumnLocation, io.greptime.v1.Ddl.AddColumnLocation.Builder, io.greptime.v1.Ddl.AddColumnLocationOrBuilder>(
+                  getLocation(),
                   getParentForChildren(),
                   isClean());
-          targetTypeExtension_ = null;
+          location_ = null;
         }
-        return targetTypeExtensionBuilder_;
+        return locationBuilder_;
       }
       @java.lang.Override
       public final Builder setUnknownFields(
@@ -21695,41 +20020,41 @@ public final Builder mergeUnknownFields(
       }
 
 
-      // @@protoc_insertion_point(builder_scope:greptime.v1.region.ChangeColumnType)
+      // @@protoc_insertion_point(builder_scope:greptime.v1.region.AddColumn)
     }
 
-    // @@protoc_insertion_point(class_scope:greptime.v1.region.ChangeColumnType)
-    private static final io.greptime.v1.region.Server.ChangeColumnType DEFAULT_INSTANCE;
+    // @@protoc_insertion_point(class_scope:greptime.v1.region.AddColumn)
+    private static final io.greptime.v1.region.Server.AddColumn DEFAULT_INSTANCE;
     static {
-      DEFAULT_INSTANCE = new io.greptime.v1.region.Server.ChangeColumnType();
+      DEFAULT_INSTANCE = new io.greptime.v1.region.Server.AddColumn();
     }
 
-    public static io.greptime.v1.region.Server.ChangeColumnType getDefaultInstance() {
+    public static io.greptime.v1.region.Server.AddColumn getDefaultInstance() {
       return DEFAULT_INSTANCE;
     }
 
-    private static final com.google.protobuf.Parser<ChangeColumnType>
-        PARSER = new com.google.protobuf.AbstractParser<ChangeColumnType>() {
+    private static final com.google.protobuf.Parser<AddColumn>
+        PARSER = new com.google.protobuf.AbstractParser<AddColumn>() {
       @java.lang.Override
-      public ChangeColumnType parsePartialFrom(
+      public AddColumn parsePartialFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws com.google.protobuf.InvalidProtocolBufferException {
-        return new ChangeColumnType(input, extensionRegistry);
+        return new AddColumn(input, extensionRegistry);
       }
     };
 
-    public static com.google.protobuf.Parser<ChangeColumnType> parser() {
+    public static com.google.protobuf.Parser<AddColumn> parser() {
       return PARSER;
     }
 
     @java.lang.Override
-    public com.google.protobuf.Parser<ChangeColumnType> getParserForType() {
+    public com.google.protobuf.Parser<AddColumn> getParserForType() {
       return PARSER;
     }
 
     @java.lang.Override
-    public io.greptime.v1.region.Server.ChangeColumnType getDefaultInstanceForType() {
+    public io.greptime.v1.region.Server.AddColumn getDefaultInstanceForType() {
       return DEFAULT_INSTANCE;
     }
 
@@ -24595,21 +22920,11 @@ public io.greptime.v1.region.Server.RegionColumnDef getDefaultInstanceForType()
   private static final 
     com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_greptime_v1_region_DropColumns_fieldAccessorTable;
-  private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_greptime_v1_region_ChangeColumnTypes_descriptor;
-  private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_greptime_v1_region_ChangeColumnTypes_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
     internal_static_greptime_v1_region_AddColumn_descriptor;
   private static final 
     com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_greptime_v1_region_AddColumn_fieldAccessorTable;
-  private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_greptime_v1_region_ChangeColumnType_descriptor;
-  private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_greptime_v1_region_ChangeColumnType_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
     internal_static_greptime_v1_region_DropColumn_descriptor;
   private static final 
@@ -24703,37 +23018,30 @@ public io.greptime.v1.region.Server.RegionColumnDef getDefaultInstanceForType()
       "ntry\032.\n\014OptionsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005val" +
       "ue\030\002 \001(\t:\0028\001\"!\n\014CloseRequest\022\021\n\tregion_i" +
       "d\030\001 \001(\004\"C\n\rAlterRequests\0222\n\010requests\030\001 \003" +
-      "(\0132 .greptime.v1.region.AlterRequest\"\367\001\n" +
+      "(\0132 .greptime.v1.region.AlterRequest\"\360\001\n" +
       "\014AlterRequest\022\021\n\tregion_id\030\001 \001(\004\0225\n\013add_" +
       "columns\030\002 \001(\0132\036.greptime.v1.region.AddCo" +
       "lumnsH\000\0227\n\014drop_columns\030\003 \001(\0132\037.greptime" +
-      ".v1.region.DropColumnsH\000\022D\n\023change_colum" +
-      "n_types\030\005 \001(\0132%.greptime.v1.region.Chang" +
-      "eColumnTypesH\000\022\026\n\016schema_version\030\004 \001(\004B\006" +
-      "\n\004kind\"@\n\nAddColumns\0222\n\013add_columns\030\001 \003(" +
-      "\0132\035.greptime.v1.region.AddColumn\"C\n\013Drop" +
-      "Columns\0224\n\014drop_columns\030\001 \003(\0132\036.greptime" +
-      ".v1.region.DropColumn\"V\n\021ChangeColumnTyp" +
-      "es\022A\n\023change_column_types\030\001 \003(\0132$.grepti" +
-      "me.v1.region.ChangeColumnType\"v\n\tAddColu" +
-      "mn\0227\n\ncolumn_def\030\001 \001(\0132#.greptime.v1.reg" +
-      "ion.RegionColumnDef\0220\n\010location\030\003 \001(\0132\036." +
-      "greptime.v1.AddColumnLocation\"\236\001\n\020Change" +
-      "ColumnType\022\023\n\013column_name\030\001 \001(\t\0220\n\013targe" +
-      "t_type\030\002 \001(\0162\033.greptime.v1.ColumnDataTyp" +
-      "e\022C\n\025target_type_extension\030\003 \001(\0132$.grept" +
-      "ime.v1.ColumnDataTypeExtension\"\032\n\nDropCo" +
-      "lumn\022\014\n\004name\030\001 \001(\t\"!\n\014FlushRequest\022\021\n\tre" +
-      "gion_id\030\001 \001(\004\"#\n\016CompactRequest\022\021\n\tregio" +
-      "n_id\030\001 \001(\004\"$\n\017TruncateRequest\022\021\n\tregion_" +
-      "id\030\001 \001(\004\"P\n\017RegionColumnDef\022*\n\ncolumn_de" +
-      "f\030\001 \001(\0132\026.greptime.v1.ColumnDef\022\021\n\tcolum" +
-      "n_id\030\002 \001(\r2Y\n\006Region\022O\n\006Handle\022!.greptim" +
-      "e.v1.region.RegionRequest\032\".greptime.v1." +
-      "region.RegionResponseB]\n\025io.greptime.v1." +
-      "regionB\006ServerZ<github.com/GreptimeTeam/" +
-      "greptime-proto/go/greptime/v1/regionb\006pr" +
-      "oto3"
+      ".v1.region.DropColumnsH\000\022=\n\023change_colum" +
+      "n_types\030\005 \001(\0132\036.greptime.v1.ChangeColumn" +
+      "TypesH\000\022\026\n\016schema_version\030\004 \001(\004B\006\n\004kind\"" +
+      "@\n\nAddColumns\0222\n\013add_columns\030\001 \003(\0132\035.gre" +
+      "ptime.v1.region.AddColumn\"C\n\013DropColumns" +
+      "\0224\n\014drop_columns\030\001 \003(\0132\036.greptime.v1.reg" +
+      "ion.DropColumn\"v\n\tAddColumn\0227\n\ncolumn_de" +
+      "f\030\001 \001(\0132#.greptime.v1.region.RegionColum" +
+      "nDef\0220\n\010location\030\003 \001(\0132\036.greptime.v1.Add" +
+      "ColumnLocation\"\032\n\nDropColumn\022\014\n\004name\030\001 \001" +
+      "(\t\"!\n\014FlushRequest\022\021\n\tregion_id\030\001 \001(\004\"#\n" +
+      "\016CompactRequest\022\021\n\tregion_id\030\001 \001(\004\"$\n\017Tr" +
+      "uncateRequest\022\021\n\tregion_id\030\001 \001(\004\"P\n\017Regi" +
+      "onColumnDef\022*\n\ncolumn_def\030\001 \001(\0132\026.grepti" +
+      "me.v1.ColumnDef\022\021\n\tcolumn_id\030\002 \001(\r2Y\n\006Re" +
+      "gion\022O\n\006Handle\022!.greptime.v1.region.Regi" +
+      "onRequest\032\".greptime.v1.region.RegionRes" +
+      "ponseB]\n\025io.greptime.v1.regionB\006ServerZ<" +
+      "github.com/GreptimeTeam/greptime-proto/g" +
+      "o/greptime/v1/regionb\006proto3"
     };
     descriptor = com.google.protobuf.Descriptors.FileDescriptor
       .internalBuildGeneratedFileFrom(descriptorData,
@@ -24874,50 +23182,38 @@ public io.greptime.v1.region.Server.RegionColumnDef getDefaultInstanceForType()
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_region_DropColumns_descriptor,
         new java.lang.String[] { "DropColumns", });
-    internal_static_greptime_v1_region_ChangeColumnTypes_descriptor =
-      getDescriptor().getMessageTypes().get(18);
-    internal_static_greptime_v1_region_ChangeColumnTypes_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_greptime_v1_region_ChangeColumnTypes_descriptor,
-        new java.lang.String[] { "ChangeColumnTypes", });
     internal_static_greptime_v1_region_AddColumn_descriptor =
-      getDescriptor().getMessageTypes().get(19);
+      getDescriptor().getMessageTypes().get(18);
     internal_static_greptime_v1_region_AddColumn_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_region_AddColumn_descriptor,
         new java.lang.String[] { "ColumnDef", "Location", });
-    internal_static_greptime_v1_region_ChangeColumnType_descriptor =
-      getDescriptor().getMessageTypes().get(20);
-    internal_static_greptime_v1_region_ChangeColumnType_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_greptime_v1_region_ChangeColumnType_descriptor,
-        new java.lang.String[] { "ColumnName", "TargetType", "TargetTypeExtension", });
     internal_static_greptime_v1_region_DropColumn_descriptor =
-      getDescriptor().getMessageTypes().get(21);
+      getDescriptor().getMessageTypes().get(19);
     internal_static_greptime_v1_region_DropColumn_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_region_DropColumn_descriptor,
         new java.lang.String[] { "Name", });
     internal_static_greptime_v1_region_FlushRequest_descriptor =
-      getDescriptor().getMessageTypes().get(22);
+      getDescriptor().getMessageTypes().get(20);
     internal_static_greptime_v1_region_FlushRequest_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_region_FlushRequest_descriptor,
         new java.lang.String[] { "RegionId", });
     internal_static_greptime_v1_region_CompactRequest_descriptor =
-      getDescriptor().getMessageTypes().get(23);
+      getDescriptor().getMessageTypes().get(21);
     internal_static_greptime_v1_region_CompactRequest_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_region_CompactRequest_descriptor,
         new java.lang.String[] { "RegionId", });
     internal_static_greptime_v1_region_TruncateRequest_descriptor =
-      getDescriptor().getMessageTypes().get(24);
+      getDescriptor().getMessageTypes().get(22);
     internal_static_greptime_v1_region_TruncateRequest_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_region_TruncateRequest_descriptor,
         new java.lang.String[] { "RegionId", });
     internal_static_greptime_v1_region_RegionColumnDef_descriptor =
-      getDescriptor().getMessageTypes().get(25);
+      getDescriptor().getMessageTypes().get(23);
     internal_static_greptime_v1_region_RegionColumnDef_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_region_RegionColumnDef_descriptor,
diff --git a/proto/greptime/v1/region/server.proto b/proto/greptime/v1/region/server.proto
index 28cf9365..af775df7 100644
--- a/proto/greptime/v1/region/server.proto
+++ b/proto/greptime/v1/region/server.proto
@@ -137,19 +137,11 @@ message AddColumns { repeated AddColumn add_columns = 1; }
 
 message DropColumns { repeated DropColumn drop_columns = 1; }
 
-message ChangeColumnTypes { repeated ChangeColumnType change_column_types = 1; }
-
 message AddColumn {
   RegionColumnDef column_def = 1;
   AddColumnLocation location = 3;
 }
 
-message ChangeColumnType {
-    string column_name = 1;
-    ColumnDataType target_type = 2;
-    ColumnDataTypeExtension target_type_extension = 3;
-}
-
 message DropColumn { string name = 1; }
 
 message FlushRequest { uint64 region_id = 1; }