pgsql: Don't try to fix eliminated nbtree array scan keys.

Started by Peter Geogheganover 2 years ago1 messagescomitters

pg@bowt.ie

over 2 years ago

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: /messages/by-id/CAA=D8a2sHK6CAzZ=0CeafC-Y-MFXbYxnRSHvZTi=+JHu6kAa8Q@mail.gmail.com

Branch
------
master

Details
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https://git.postgresql.org/pg/commitdiff/f22e17f76cf569a797c45268081feadc8ebd68c7

Modified Files
--------------
src/backend/access/nbtree/nbtutils.c | 7 +++++++
1 file changed, 7 insertions(+)