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| author | Alexander Korotkov <akorotkov@postgresql.org> | 2024-01-15 17:45:16 +0200 |
|---|---|---|
| committer | Alexander Korotkov <akorotkov@postgresql.org> | 2024-01-15 17:45:16 +0200 |
| commit | fe093994db4dc5dcc239f8839b094c0b75de00cf (patch) | |
| tree | aede7beb3d5e1e5d26b1b54d78ad5d8306e9339a /doc/src | |
| parent | aa817c7496575b37fde6ea5e0cd65b26f29ea532 (diff) | |
| download | postgresql-fe093994db4dc5dcc239f8839b094c0b75de00cf.tar.gz postgresql-fe093994db4dc5dcc239f8839b094c0b75de00cf.zip | |
Fix 'negative bitmapset member' error
When removing a useless join, we'd remove PHVs that are not used at join
partner rels or above the join. A PHV that references the join's relid
in ph_eval_at is logically "above" the join and thus should not be
removed. We have the following check for that:
!bms_is_member(ojrelid, phinfo->ph_eval_at)
However, in the case of SJE removing a useless inner join, 'ojrelid' is
set to -1, which would trigger the "negative bitmapset member not
allowed" error in bms_is_member().
Fix it by skipping examining ojrelid for inner joins in this check.
Reported-by: Zuming Jiang
Bug: #18260
Discussion: https://postgr.es/m/18260-1b6a0c4ae311b837%40postgresql.org
Author: Richard Guo
Reviewed-by: Andrei Lepikhov
Diffstat (limited to 'doc/src')
0 files changed, 0 insertions, 0 deletions