9 Commits

Author	SHA1	Message	Date
wuudjac	0081e17b02	expression, planner: support builtin function benchmark (#9252)	2019-02-13 19:53:28 +08:00
Kenan Yao	09a5c8028e	plan: derive col is not null from col op col conditions (#8603) ... Check whether the `op` condition is null rejected, if yes, derive `col is not null` for both sides of inner join, and for inner side of outer join. Also, remove duplicate conditions before pushing them down. Check if the condition is mutable before removing duplicates. For AntiSemiJoin, AntiLeftOuterSemiJoin and LeftOuterSemiJoin, do not generate new `is not null` conditions.	2019-01-30 10:53:46 +08:00
H	6a06977dd1	plan: rewrite exact like expression to equal condition (#9071)	2019-01-28 19:12:30 +08:00
Jun-Seok Heo	5374ff8935	expression,planner: support non-deterministic functions (e.g., now) in the plan cache (#8105)	2018-11-01 23:53:32 +08:00
tiancaiamao	89dda9d9a8	*: move parser to a separate repository (#8036)	2018-10-25 11:12:10 +08:00
Zhang Jian	f33e04f486	expression: make sysdate unfoldable (#7838)	2018-10-08 16:47:45 +08:00
Kenan Yao	177c155161	plan: exclude IsNull from constant propagation (#7835)	2018-10-08 14:47:13 +08:00
Jun-Seok Heo	0306bb0070	tidb: support a plan cache for prepared statements (#3956) ... * tidb: support a plan cache for prepared statements	2017-10-24 00:55:51 -05:00
Jian Zhang	60626912a7	expression, plan: remove "foldable" from "baseBuiltinFunc" (#4759)	2017-10-12 04:03:54 -05:00