48fce5e15c
*: sync wait stats loading for stable plan ( #30026 )
2021-12-31 10:35:50 +08:00
daf525a17e
*: replace compareDatum by compare, range part ( #30710 )
2021-12-16 19:48:36 +08:00
2f42f7c0f6
planner: unify the argument of stats functions to use SessionCtx instead of StatementContext ( #30668 )
2021-12-14 19:36:35 +08:00
4051cf435c
statistics: replace compareDatum by compare ( #30052 )
2021-11-23 19:21:50 +08:00
94e30df8e2
parser: fix compiling, add unit tests ( #28700 )
2021-10-11 23:15:25 +08:00
c6de069d61
sessionctx, statistics: remove unused StatementContext.mu.histogramsNotLoad ( #27928 )
2021-09-16 11:30:42 +08:00
7755d25aba
*: Integrate SkyWalking-eyes to check license headers in CI and fix licenses headers ( #27198 )
2021-08-16 18:52:00 +08:00
cb65b7a2f7
statistics: improve out-of-range estimation strategy ( #26502 )
2021-08-02 17:43:08 +08:00
0974cb415b
statistics: not to convert small range into points when estimate rowcount using v2 stats ( #26695 )
2021-07-28 18:58:18 +08:00
11716e7f4a
*: use full sampling as default analyze ( #25132 )
2021-06-06 00:34:27 +08:00
32cf14bd7d
statistics: relax the check of the OutOfRange ( #24958 )
2021-06-02 22:16:25 +08:00
9b5d92ef24
statistics: fix the unexpected estimation error on full sampling ( #24623 )
2021-05-26 18:47:34 +08:00
66ad36ee10
planner, executor, statistics: support correlation calc for new sampling method ( #24458 )
2021-05-25 23:57:34 +08:00
18d519f056
stats, executor: use a correct sampling to collect stats ( #23997 )
2021-05-02 23:11:51 +08:00
6b0b74e5be
statistics: fix three bugs about MergePartTopN2GlobalTopN ( #24370 )
2021-04-29 19:31:57 +08:00
bd12ea96cc
statistics: use index fm-sketches instead of bucket NDV to calculate global NDV for indexes ( #23962 )
2021-04-15 14:59:55 +08:00
dbd31ad044
statistics: make the global-level topN more accurate ( #23862 )
2021-04-12 12:06:34 +08:00
490c9386fb
statistics: optimize the global histogram merging algorithm ( #23520 )
2021-03-26 15:40:59 +08:00
396760174c
statistics: recalculate bucket repeats when merging global statistics ( #23486 )
2021-03-24 11:47:36 +08:00
31df40b9bc
statistics: add some test cases of global-stats to cover more column types ( #23138 )
2021-03-08 14:10:54 +08:00
a1712a037f
statistics: add more test cases about global-stats and fix some issues ( #23099 )
2021-03-05 14:34:31 +08:00
263155a650
statistics: make exponential backoff estimation more safe ( #23086 )
2021-03-04 11:10:54 +08:00
b63337f4e9
statistics: fix merge idx hist with poped topn ( #23075 )
2021-03-03 18:36:06 +08:00
a64d8860f1
statistics: forbid global-stats in stats-ver1 and make analyze options take effect in global-stats ( #23050 )
2021-03-03 11:58:54 +08:00
270d497848
statistics: introduce new estimation logic when index histogram fails to estimate ( #22682 )
...
* statistics: introduce new estimation logic when index histogram fail to estimate
* address comments
* address comments
Co-authored-by: Ti Chi Robot <71242396+ti-chi-bot@users.noreply.github.com >
2021-02-24 16:30:03 +08:00
f3fe4895cb
statistics: support to store FMSketch and add FMSketch to column stats ( #22841 )
...
* add FMSketch to mysql.stats_histograms
* statistics: support store FMSketch and add FMSketch to histogram
* FIX UT
* Create Stats_FM_Sketch Table
* fix UT
* add some tests
* FIX ut
* move fmSketch from histogram to column.stats
* remove unused code and comments
* fix ut
* fix ut
* fix ut
* fix ut
* fix ut
* fix ut
* finish the FMSketch.MemoryUsage function
* add some comments for FMSketch.MemoryUsage function
* fix typo
Co-authored-by: ti-srebot <66930949+ti-srebot@users.noreply.github.com >
Co-authored-by: Ti Chi Robot <71242396+ti-chi-bot@users.noreply.github.com >
2021-02-23 10:39:09 +08:00
1cd390b2bc
statistics: merge poped topn when generating the global histogram ( #22848 )
2021-02-22 14:34:53 +08:00
59ccb29508
statistics: merge the partition-level histograms to a global-level histogram ( #22603 )
2021-02-19 11:08:04 +08:00
343c412531
planner, executor, statistics: add tests for version 2 and fix bugs ( #22461 )
...
Co-authored-by: ti-srebot <66930949+ti-srebot@users.noreply.github.com >
2021-02-04 15:52:30 +08:00
3dd842f50a
statistics: add bucket ndv for index histogram ( #20580 )
...
Co-authored-by: Yuanjia Zhang <zhangyuanjia@pingcap.com >
Co-authored-by: ti-srebot <66930949+ti-srebot@users.noreply.github.com >
2021-01-13 18:24:21 +08:00
092a01a0a4
statistics, executor: refactor statistics on columns ( #21817 )
2020-12-24 13:56:30 +08:00
5acff8de7a
*: Revert " #19008 " and " #18788 " ( #21599 )
2020-12-14 15:06:35 +08:00
b4eee287af
*: extract topn out of histogram correctly ( #21007 )
...
Co-authored-by: Yuanjia Zhang <zhangyuanjia@pingcap.com >
2020-12-10 17:05:39 +08:00
28c9e9290b
*: gocritic fixes for commentFormatting ( #21578 )
2020-12-09 12:03:17 +08:00
5131514ebb
statistics: fix a bug which causes panic when using the clustered index and the new collation ( #21379 )
...
Signed-off-by: wjhuang2016 <huangwenjun1997@gmail.com >
2020-12-01 14:08:41 +08:00
0cddd8b7fb
statistics: fix the panic when analyze with collation enabled ( #21262 )
2020-11-25 20:10:20 +08:00
583cbd265b
statistics: store the topn by slice instead of map ( #20818 )
2020-11-06 15:39:33 +08:00
c2e3b0a6ad
statistics: decouple TopN from CMSKetch ( #20572 )
2020-10-28 15:16:42 +08:00
cd16de894b
*: introduce LRUCache with limited memory for statistics ( #18788 )
2020-10-15 17:36:21 +08:00
3903c6b8b5
statistics: fix the display of bounds for indexes with date/time columns. ( #19961 )
2020-09-17 19:01:26 +08:00
aeee1524e4
planner: fix the inappropriate heuristic rule to estimate the EQ selectivity when out of range ( #18543 )
2020-08-05 14:11:06 +08:00
beaafce2a5
statistics:enable memtracker for table statisitic ( #18685 )
2020-07-23 16:13:34 +08:00
ceec9d9c63
*: fix the estimation error on normal column when collation enabled ( #18104 )
2020-07-01 17:11:51 +08:00
06e73a56cc
*: compatible with Go 1.14's checkptr ( #18189 )
2020-06-24 13:04:47 +08:00
a7bdb82402
*: Reduce memory operations by simply passing size hint to make ( #14922 )
2020-02-25 15:44:36 +08:00
510c36d4cb
planner: fix a bug for chunk cost model. ( #14144 )
2019-12-22 09:15:16 +08:00
02408dbd04
planner: support cost model for Chunk encode format. ( #13461 )
2019-12-18 15:47:16 +08:00
5a589c9994
planner: consider disk cost in hashJoin ( #13246 )
2019-12-03 13:43:19 +08:00
b0e8e0764d
*: fix staticcheck errors in folder statistics ( #13776 )
2019-11-28 12:31:21 +08:00
5069939d74
stats: specially handle unqiue key when estimate ( #13354 )
2019-11-11 17:52:30 +08:00
