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-rw-r--r--src/backend/optimizer/util/var.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/backend/optimizer/util/var.c b/src/backend/optimizer/util/var.c
index 399f3a95e87..b26decc4373 100644
--- a/src/backend/optimizer/util/var.c
+++ b/src/backend/optimizer/util/var.c
@@ -838,6 +838,7 @@ flatten_join_alias_vars_mutator(Node *node,
/* Shouldn't need to handle these planner auxiliary nodes here */
Assert(!IsA(node, SpecialJoinInfo));
Assert(!IsA(node, PlaceHolderInfo));
+ Assert(!IsA(node, MinMaxAggInfo));
return expression_tree_mutator(node, flatten_join_alias_vars_mutator,
(void *) context);