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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2023-06-12 10:01:26 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2023-06-12 10:01:26 -0400 |
| commit | bfd332b3fda5c73e28c05b7ba0aac6cf053cdf00 (patch) | |
| tree | 7d29b08446723d1ed812546bc092c768be087a5c /src/backend/executor/nodeProjectSet.c | |
| parent | 548d7260309008b146bd9eaa66f3c5be0a8d725a (diff) | |
| download | postgresql-bfd332b3fda5c73e28c05b7ba0aac6cf053cdf00.tar.gz postgresql-bfd332b3fda5c73e28c05b7ba0aac6cf053cdf00.zip | |
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-07C881EA59A7@winand.at
Diffstat (limited to 'src/backend/executor/nodeProjectSet.c')
0 files changed, 0 insertions, 0 deletions