Fix "wrong varnullingrels" for subquery nestloop parameters. If we apply outer join identity 3 when relation C is a subquery having lateral references to relation B, then the lateral references within C continue to bear the original syntactically-correct varnullingrels marks, but that won't match what is available from the outer side of the nestloop. Compensate for that in process_subquery_nestloop_params(). This is a slightly hacky fix, but we certainly don't want to re-plan C in toto for each possible outer join order, so there's not a lot of better alternatives.
Richard Guo and Tom Lane, per report from Markus Winand Discussion: https://postgr.es/m/dfbb2d25-de97-49ca-a60e-07c881ea5...@winand.at Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/bfd332b3fda5c73e28c05b7ba0aac6cf053cdf00 Modified Files -------------- src/backend/optimizer/plan/setrefs.c | 8 ++++--- src/backend/optimizer/util/paramassign.c | 36 +++++++++++++++++++++++++------- src/test/regress/expected/join.out | 18 ++++++++++++++++ src/test/regress/sql/join.sql | 7 +++++++ 4 files changed, 59 insertions(+), 10 deletions(-)
