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4 commits

Author SHA1 Message Date
Varun Gupta
644d9f38b9 MDEV-21480: Unique key using ref access though eq_ref access can be used
For a unique key if all the keyparts are NOT NULL or the predicates involving
the keyparts is NULL rejecting, then we can use EQ_REF access instead of ref
access with the unique key
2020-05-01 15:17:10 +05:30
Sergei Petrunia
f7579518e2 MDEV-19600: The optimizer should be able to produce rows=1 estimate for unique index with NULLable columns
Modify best_access_path() to produce rows=1 estimate for null-rejecting
lookups on unique NULL keys.
2019-06-05 14:00:45 +03:00
Sergei Golubchik
36e59752e7 Merge branch '10.2' into 10.3 2018-06-30 16:39:20 +02:00
Michael Widenius
a7abddeffa Create 'main' test directory and move 't' and 'r' there 2018-03-29 13:59:44 +03:00
Renamed from mysql-test/r/subselect_sj_nonmerged.result (Browse further)