Обсуждение: pgsql: Clarify why _bt_killitems sorts its items array.

Clarify why _bt_killitems sorts its items array.

Make it clear why _bt_killitems sorts the scan's so->killedItems[]
array.  Also add an assertion to the _bt_killitems loop (that iterates
through this array) to verify it accesses tuples in leaf page order.

Follow-up to commit bfb335df58.

Author: Peter Geoghegan <pg@bowt.ie>
Suggested-by: Victor Yegorov <vyegorov@gmail.com>
Discussion: https://postgr.es/m/CAGnEboirgArezZDNeFrR8FOGvKF-Xok333s2iVwWi65gZf8MEA@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/e16c6f024718cf854f5b76a4a2ed402f1a7911f1

Modified Files
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src/backend/access/nbtree/nbtutils.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)