Disallow LATERAL references to the target table of an UPDATE/DELETE. On second thought, commit 0c051c90082da0b7e5bcaf9aabcbd4f361137cdc was over-hasty: rather than allowing this case, we ought to reject it for now. That leaves the field clear for a future feature that allows the target table to be re-specified in the FROM (or USING) clause, which will enable left-joining the target table to something else. We can then also allow LATERAL references to such an explicitly re-specified target table. But allowing them right now will create ambiguities or worse for such a feature, and it isn't something we documented 9.3 as supporting.
While at it, add a convenience subroutine to avoid having several copies of the ereport for disalllowed-LATERAL-reference cases. Branch ------ REL9_3_STABLE Details ------- http://git.postgresql.org/pg/commitdiff/27ff4cfe760a79c78eac2948cea67f2ae486cbbf Modified Files -------------- src/backend/parser/analyze.c | 12 ++++--- src/backend/parser/parse_relation.c | 62 +++++++++++++++++++++-------------- src/include/parser/parse_node.h | 3 +- src/test/regress/expected/join.out | 48 +++++++++++---------------- src/test/regress/sql/join.sql | 13 ++++---- 5 files changed, 72 insertions(+), 66 deletions(-) -- Sent via pgsql-committers mailing list ([email protected]) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers
