11 Commits

Author	SHA1	Message	Date
Kenan Yao	5a283a98dd	plan/executor: make semi joins null and empty aware (#9051)	2019-02-25 15:42:38 +08:00
Haibin Xie	bc0e70dc5c	planner/core: implement skyline pruning (#9337)	2019-02-19 11:19:30 +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
Kenan Yao	776c90fa79	planner: check null and empty for != any(subq) and = all(subq) (#9106)	2019-01-21 16:17:48 +08:00
crazycs	3c98f69266	*: support select partition for partition table (#8990)	2019-01-14 20:55:52 +08:00
zyguan	29c17a1eb9	planner/core: correct column name with unary plus sign (#8702)	2018-12-19 23:35:43 +08:00
Zhang Jian	f33e04f486	expression: make sysdate unfoldable (#7838)	2018-10-08 16:47:45 +08:00
Zhang Jian	869e20138a	plan: refine the handle check to use point get plan for prepare statement (#7732)	2018-09-25 11:32:12 +08:00
Kenan Yao	7f6babb2b4	plan: fix mistaken conversion from outer join to inner join (#7689) ... exclude upper level join conditions from predicates when simplifying embedded outer join	2018-09-17 13:39:15 +08:00
Zhang Jian	1bf3f3d407	ranger: refine explain format, again (#7041)	2018-07-17 16:47:44 +08:00
Ewan Chou	372a6fc921	plan: refine explain result format (#7011)	2018-07-09 13:55:36 +08:00