diff options
| -rw-r--r-- | src/backend/optimizer/util/clauses.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/backend/optimizer/util/clauses.c b/src/backend/optimizer/util/clauses.c index f4446169f5e..8f958236f83 100644 --- a/src/backend/optimizer/util/clauses.c +++ b/src/backend/optimizer/util/clauses.c @@ -3378,11 +3378,16 @@ eval_const_expressions_mutator(Node *node, case T_ArrayRef: case T_ArrayExpr: case T_RowExpr: + case T_MinMaxExpr: { /* * Generic handling for node types whose own processing is * known to be immutable, and for which we need no smarts * beyond "simplify if all inputs are constants". + * + * Treating MinMaxExpr this way amounts to assuming that the + * btree comparison function it calls is immutable; see the + * reasoning in contain_mutable_functions_walker. */ /* Copy the node and const-simplify its arguments */ @@ -3783,7 +3788,7 @@ eval_const_expressions_mutator(Node *node, case T_ConvertRowtypeExpr: { ConvertRowtypeExpr *cre = castNode(ConvertRowtypeExpr, node); - Node *arg; + Node *arg; ConvertRowtypeExpr *newcre; arg = eval_const_expressions_mutator((Node *) cre->arg, |