Reject MERGE in CTEs and COPY The grammar added for MERGE inadvertently made it accepted syntax in places that were not prepared to deal with it -- namely COPY and inside CTEs, but invoking these things with MERGE currently causes assertion failures or weird misbehavior in non-assertion builds. Protect those places by checking for it explicitly until somebody decides to implement it.
Reported-by: Alexey Borzov <borz_...@cs.msu.su> Discussion: https://postgr.es/m/17579-82482cd7b267b...@postgresql.org Branch ------ REL_15_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/455d254d22665eb7af3b714435f3fecc63696cc7 Modified Files -------------- src/backend/commands/copy.c | 6 ++++++ src/backend/parser/parse_cte.c | 7 +++++++ src/test/regress/expected/merge.out | 14 ++++++++++++++ src/test/regress/sql/merge.sql | 10 ++++++++++ 4 files changed, 37 insertions(+)
