2 commits

Author	SHA1	Message	Date
Oleg Smirnov	9f9a53be40	MDEV-30901 Index usage for DATE(datetime_column) = const does not work for engine Memory ... Fix incorrect approach to determine whether a field is part of an index. Remove "force index" hints from tests. Add tests with composite indexes	2023-04-25 20:21:35 +07:00
Oleg Smirnov	f0b665f880	MDEV-8320 Allow index usage for DATE(col) <=> const and YEAR <=> const ... Rewrite datetime comparison conditions into sargeable. For example, YEAR(col) <= val -> col <= YEAR_END(val) YEAR(col) < val -> col < YEAR_START(val) YEAR(col) >= val -> col >= YEAR_START(val) YEAR(col) > val -> col > YEAR_END(val) YEAR(col) = val -> col BETWEEN YEAR_START(val) AND YEAR_END(val) Do the same with DATE(col), for example: DATE(col) <= val -> col <= DAY_END(val) After such a rewrite index lookup on column "col" can be employed	2023-04-25 20:21:35 +07:00