heap: partial-HOT index update improvements (phot)#37
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This patch extends the cases where HOT updates are possible in the heapam by examining expression indexes and determining if indexed values where mutated or not. Previously, any expression index on a column would disqualify it from the HOT update path. Also examines partial indexes to see if the values are within the predicate or not. This is a modified application of a patch proposed on the pgsql-hackers list: https://www.postgresql.org/message-id/flat/4d9928ee-a9e6-15f9-9c82-5981f13ffca6%40postgrespro.ru applied: https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=c203d6cf8 reverted: https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=05f84605dbeb9cf8279a157234b24bbb706c5256 Signed-off-by: Greg Burd <gregburd@amazon.com>
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Draft PR opened to enable OCR AI review on the
heap-hot-updatesbranch. Title/description are provisional — rename before publishing to pgsql-hackers.