Fixup for nodeAgg.c refactor.

Commit 5b618e1f made an unintended behavior change.

Fixup for nodeAgg.c refactor.
Commit 5b618e1f made an unintended behavior change.
b7fabe80 · Jeff Davis · 032f9ae0 · b7fabe80
Commit b7fabe80 authored Feb 20, 2020 by Jeff Davis
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src/backend/executor/nodeAgg.c src/backend/executor/nodeAgg.c +4 -1

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--- a/src/backend/executor/nodeAgg.c
+++ b/src/backend/executor/nodeAgg.c
@@ -1287,7 +1287,10 @@ build_hash_tables(AggState *aggstate)
 		Assert(perhash->aggnode->numGroups > 0);
-		build_hash_table(aggstate, setno, perhash->aggnode->numGroups);
+		if (perhash->hashtable)
+			ResetTupleHashTable(perhash->hashtable);
+		else
+			build_hash_table(aggstate, setno, perhash->aggnode->numGroups);
 	}
 }