Commit Graph

13 Commits

Author SHA1 Message Date
0e438de9ff *: move sample collector from executor to stats (#4468) 2017-09-08 12:21:10 +08:00
96461f92cf plan: let explain show count (#4031) 2017-08-04 18:15:43 +08:00
26f622d1a7 plan, executor: implement ExplainInfo() interface for data source operators (#3953) 2017-08-01 13:08:24 +08:00
c0c95199cd plan: implement ExplainInfo() interface for simple operators (#3883) 2017-07-26 20:28:58 +08:00
8ebe4c2549 plan, executor, expression: refactor explain (#3809) 2017-07-25 14:12:48 +08:00
e0e77d3bac *: reduce analyze table read when table contains PK (#3783)
* *: reduce analyze table read when table contains PK

* fix ci

* *: address comment

* fix ci

* statistics:make comment more accurate
2017-07-18 05:07:17 -05:00
a81726a42f executor, statistics: analyze with null count. (#3336) 2017-05-26 16:44:09 +08:00
e7257d0e9d plan, executor: open the new plan switch for all test. (#3274) 2017-05-16 20:40:12 +08:00
588bf60f0c *: support analyze index (#3156) 2017-05-01 19:42:46 +08:00
16cefef717 executor, statistics: use FM sketch to estimate NDV (#2966) 2017-04-01 15:03:54 +08:00
6c59d520e6 *: remove stats switch. (#2846) 2017-03-16 17:11:28 +08:00
950583eaf8 plan, tidb-server: add a flag to control statistic info reading. (#2565)
* plan, tidb-server: add a flag to control statistic info reading.

* pass test.

* address comment
2017-01-30 11:29:43 +08:00
4d9b70f0a6 plan, executor: give special treat for index columns when analyze table (#2436)
* plan/statistics: statistics support add index info
2017-01-26 11:24:53 +08:00