From: Peter Geoghegan <pg@bowt.ie>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Don't try to fix eliminated nbtree array scan keys.
Date: Thu, 18 Apr 2024 15:49:02 +0000
Message-ID: <E1rxU0T-002iKQ-UF@gemulon.postgresql.org> (raw)
Don't try to fix eliminated nbtree array scan keys.
Preprocessing for nbtree index scans allowed array "input" scan keys
already marked eliminated during array-specific preprocessing to be
"fixed up" during preprocessing proper. This allowed eliminated scan
keys on DESC index columns to spurious have their strategy commuted,
causing assertion failures.
To fix, teach _bt_fix_scankey_strategy to ignore these scan keys. This
brings it in line with its only caller, _bt_preprocess_keys.
Oversight in commit 5bf748b8, which enhanced nbtree ScalarArrayOp
execution.
Reported-By: Donghang Lin <donghanglin@gmail.com>
Discussion: https://postgr.es/m/CAA=D8a2sHK6CAzZ=0CeafC-Y-MFXbYxnRSHvZTi=+JHu6kAa8Q@mail.gmail.com
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/f22e17f76cf569a797c45268081feadc8ebd68c7
Modified Files
--------------
src/backend/access/nbtree/nbtutils.c | 7 +++++++
1 file changed, 7 insertions(+)
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To: pgsql-committers@postgresql.org
Cc: pg@bowt.ie, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Don't try to fix eliminated nbtree array scan keys.
In-Reply-To: <E1rxU0T-002iKQ-UF@gemulon.postgresql.org>
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