add ANALYZE statement support (#141)

* add ANALYZE statement support

* Added ; to align with other command descriptions

README.md

@@ -177,6 +177,7 @@ and `{}` for a mutually exclusive keyword.
 | Show DML Execution Plan | `EXPLAIN {INSERT\|UPDATE\|DELETE} ...;` | |
 | Show Query Execution Plan with Stats | `EXPLAIN ANALYZE SELECT ...;` | |
 | Show DML Execution Plan with Stats | `EXPLAIN ANALYZE {INSERT\|UPDATE\|DELETE} ...;` | |
+| Start a new query optimizer statistics package construction | `ANALYZE;` | |
 | Start Read-Write Transaction | `BEGIN [RW] [PRIORITY {HIGH\|MEDIUM\|LOW}] [TAG <tag>];` | See [Request Priority](#request-priority) for details on the priority. The tag you set is used as both transaction tag and request tag. See also [Transaction Tags and Request Tags](#transaction-tags-and-request-tags).|
 | Commit Read-Write Transaction | `COMMIT;` | |
 | Rollback Read-Write Transaction | `ROLLBACK;` | |

statement.go

@@ -93,6 +93,7 @@ var (
 	revokeRe         = regexp.MustCompile(`(?is)^REVOKE\s.+$`)
 	alterRe          = regexp.MustCompile(`(?is)^ALTER\s.+$`)
 	truncateTableRe  = regexp.MustCompile(`(?is)^TRUNCATE\s+TABLE\s+(.+)$`)
+	analyzeRe        = regexp.MustCompile(`(?is)^ANALYZE$`)
 
 	// DML
 	dmlRe = regexp.MustCompile(`(?is)^(INSERT|UPDATE|DELETE)\s+.+$`)
@@ -152,6 +153,8 @@ func BuildStatement(input string) (Statement, error) {
 	case truncateTableRe.MatchString(input):
 		matched := truncateTableRe.FindStringSubmatch(input)
 		return &TruncateTableStatement{Table: unquoteIdentifier(matched[1])}, nil
+	case analyzeRe.MatchString(input):
+		return &DdlStatement{Ddl: input}, nil
 	case showDatabasesRe.MatchString(input):
 		return &ShowDatabasesStatement{}, nil
 	case showCreateTableRe.MatchString(input):

statement_test.go

@@ -171,6 +171,11 @@ func TestBuildStatement(t *testing.T) {
 			input: "ALTER STATISTICS package SET OPTIONS (allow_gc = false)",
 			want:  &DdlStatement{Ddl: "ALTER STATISTICS package SET OPTIONS (allow_gc = false)"},
 		},
+		{
+			desc:  "ANALYZE statement",
+			input: "ANALYZE",
+			want:  &DdlStatement{Ddl: "ANALYZE"},
+		},
 		{
 			desc:  "INSERT statement",
 			input: "INSERT INTO t1 (id, name) VALUES (1, 'yuki')",