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feat: add anchor for non-ordinal plan reference #726

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feat: add anchor for non-ordinal plan reference #726

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6 changes: 5 additions & 1 deletion proto/substrait/algebra.proto
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Original file line number Diff line number Diff line change
Expand Up @@ -1633,8 +1633,12 @@ message AggregateFunction {
}
}

// This rel is used to create references,
// This rel is used to create references,
// in case we refer to a RelRoot field names will be ignored
message ReferenceRel {
// points to a PlanRel in Plan.relations (ordinal reference)
int32 subtree_ordinal = 1;

// points to a subtree_anchor in PlanRel (for non-ordinal reference)
uint32 subtree_reference = 2;
}
3 changes: 3 additions & 0 deletions proto/substrait/plan.proto
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,9 @@ message PlanRel {
// The root of a relation tree
RelRoot root = 2;
}

// provides a non-ordinal anchor for ReferenceRel
uint32 subtree_anchor = 3;
}

// Describe a set of operations to complete.
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