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-rw-r--r--src/backend/executor/execGrouping.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/backend/executor/execGrouping.c b/src/backend/executor/execGrouping.c
index 7233f1e3c03..774e4de8828 100644
--- a/src/backend/executor/execGrouping.c
+++ b/src/backend/executor/execGrouping.c
@@ -62,13 +62,15 @@ execTuplesMatchPrepare(TupleDesc desc,
const Oid *collations,
PlanState *parent)
{
- Oid *eqFunctions = (Oid *) palloc(numCols * sizeof(Oid));
+ Oid *eqFunctions;
int i;
ExprState *expr;
if (numCols == 0)
return NULL;
+ eqFunctions = (Oid *) palloc(numCols * sizeof(Oid));
+
/* lookup equality functions */
for (i = 0; i < numCols; i++)
eqFunctions[i] = get_opcode(eqOperators[i]);