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Tom Lane 30a35bca3f Fix crash in postgres_fdw for provably-empty remote UPDATE/DELETE. ... In 86dc90056, I'd written find_modifytable_subplan with the assumption that if the immediate child of a ModifyTable is a Result, it must be a projecting Result with a subplan. However, if the UPDATE or DELETE has a provably-constant-false WHERE clause, that's not so: we'll generate a dummy subplan with a childless Result. Add the missing null-check so we don't crash on such cases. Per report from Alexander Pyhalov. Discussion: https://postgr.es/m/b9a6f53549456b2f3e2fd150dcd79d72@postgrespro.ru		5 years ago
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postgres_fdw.out	Fix crash in postgres_fdw for provably-empty remote UPDATE/DELETE.	5 years ago