Fix pg_prepared_statements.result_types for DML statements
authorPeter Eisentraut <peter@eisentraut.org>
Tue, 5 Jul 2022 08:26:36 +0000 (10:26 +0200)
committerPeter Eisentraut <peter@eisentraut.org>
Tue, 5 Jul 2022 08:26:36 +0000 (10:26 +0200)
commit6ffff0fd225432fe2ae4bd5abb7ff6113e255418
treef91bd8fc1216b34cace2ac81a5aeab6ec3fb8cb8
parente3dd7c06e62774628e102c3cd47ee46e85519de7
Fix pg_prepared_statements.result_types for DML statements

Amendment to 84ad713cf85aeffee5dd39f62d49a1b9e34632da: Not all
prepared statements have a result descriptor.  As currently coded,
this would crash when reading pg_prepared_statements.  Make those
cases return null for result_types instead.  Also add a test case for
it.
doc/src/sgml/catalogs.sgml
src/backend/commands/prepare.c
src/test/regress/expected/prepare.out
src/test/regress/sql/prepare.sql