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MDEV-17613 MIN/MAX Optimization (Select tables optimized away) does not work

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Prune to now-partition when there is no FOR SYSTEM_TIME clause.
This commit is contained in:
Aleksey Midenkov
2018-12-26 13:24:45 +03:00
parent 43882e764d
commit cdbac54df0
4 changed files with 63 additions and 6 deletions
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2
mysql-test/suite/versioning/r/partition_rotation.result
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@ -44,7 +44,7 @@ i
6
explain partitions select * from t1;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pn_pnsp0,pn_pnsp1 ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE t1 pn_pnsp0,pn_pnsp1 ALL NULL NULL NULL NULL 2
explain partitions select * from t1 for system_time as of '2001-02-04 10:20:30';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1_p1sp0,p1_p1sp1,p0_p0sp0,p0_p0sp1,p2_p2sp0,p2_p2sp1,pn_pnsp0,pn_pnsp1 ALL NULL NULL NULL NULL # Using where