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-rw-r--r--src/backend/executor/nodeNestloop.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/backend/executor/nodeNestloop.c b/src/backend/executor/nodeNestloop.c
index d6433c7f537..9fe78410ce9 100644
--- a/src/backend/executor/nodeNestloop.c
+++ b/src/backend/executor/nodeNestloop.c
@@ -148,6 +148,7 @@ ExecNestLoop(NestLoopState *node)
prm = &(econtext->ecxt_param_exec_vals[paramno]);
/* Param value should be an OUTER_VAR var */
+ Assert(IsA(nlp->paramval, Var));
Assert(nlp->paramval->varno == OUTER_VAR);
Assert(nlp->paramval->varattno > 0);
prm->value = slot_getattr(outerTupleSlot,