32cf14bd7d
statistics: relax the check of the OutOfRange ( #24958 )
2021-06-02 22:16:25 +08:00
734084fa2b
statistics: skip reading mysql.stats_histograms if cached stats is up-to-date ( #24175 )
2021-04-22 17:37:54 +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
550ca8eaeb
statistics: enables global-level stats to be generated in fast analyze mode ( #22931 )
2021-03-01 16:40:50 +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
2d717c12b3
statistics: merge the partition-level stats to global-level stats ( #22667 )
2021-02-05 11:42:41 +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
f22ec62dd0
statistics: fix panic occurs when stats cache inconsistency ( #22465 )
2021-01-27 16:41:07 +08:00
8d2ab4ef7a
statistics: fix inaccurate row count estimation caused by cross validation using invalid column stats ( #22479 )
2021-01-22 17:42:37 +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
76054200b6
statistics: redesign the schema for mysql.stats_extended ( #22033 )
...
Co-authored-by: ti-srebot <66930949+ti-srebot@users.noreply.github.com >
2021-01-04 17:57:24 +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
152b60ebe4
session: increase cm_sketch column max length to 6291456(6MB) ( #20152 )
2020-11-02 15:21:25 +08:00
c2e3b0a6ad
statistics: decouple TopN from CMSKetch ( #20572 )
2020-10-28 15:16:42 +08:00
f41880a4d0
statistics: improve row count estimation of multi-column equal conditions by cross validation ( #20264 )
2020-10-27 20:10:27 +08:00
cd16de894b
*: introduce LRUCache with limited memory for statistics ( #18788 )
2020-10-15 17:36:21 +08:00
c5c7bf87bb
*: support CREATE / DROP / ADMIN RELOAD STATISTICS ( #18880 )
2020-08-11 17:27:48 +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
94a722e2df
statistics: improve estimation for index equal condition ( #17366 )
2020-06-03 08:32:17 +08:00
a7bdb82402
*: Reduce memory operations by simply passing size hint to make ( #14922 )
2020-02-25 15:44:36 +08:00
1d60894c96
ddl: add index progress metric ( #14055 )
2019-12-20 21:50:43 +08:00
02408dbd04
planner: support cost model for Chunk encode format. ( #13461 )
2019-12-18 15:47:16 +08:00
438d39ebcd
*: revert #10124 and remove sql mode PadCharToFullLength ( #14007 )
2019-12-17 15:25:06 +08:00
2c6f4468a0
statistics: fix row count estimation of unique composite index ( #14076 )
2019-12-16 19:05:13 +08:00
5a589c9994
planner: consider disk cost in hashJoin ( #13246 )
2019-12-03 13:43:19 +08:00
5069939d74
stats: specially handle unqiue key when estimate ( #13354 )
2019-11-11 17:52:30 +08:00
6fd74f3e4c
planner: support cost model for tiflash table scan ( #12868 )
2019-10-29 16:05:51 +08:00
6d51ad33fd
*: Optimize struct memory usage by adjust field order ( #11629 )
2019-08-13 17:20:53 +08:00
d51a3e067e
planner: use HistColl containing all columns for row width estimation ( #11689 )
2019-08-09 17:00:33 +08:00
fe038642e5
*: refactor cost model formulas and constants ( #10581 )
2019-08-07 17:44:09 +08:00
03bb8d7818
stats: convert small range to points in selectivity ( #11524 )
2019-08-05 10:45:51 +08:00
bd419c8fdb
stats: fix panic when dump pseudo columns ( #11430 )
2019-07-26 14:43:20 +08:00
89bfed305c
executor, stats: fix fast analyze bugs ( #10680 )
2019-06-04 12:32:41 +08:00
69b02a3736
*: make config items Performance.*, OOMAction and MemQuotaQuery support hot-reloading ( #10295 )
2019-04-29 16:38:46 +08:00
e5f734e54c
*: move the Handle of stats to single package. ( #10149 )
2019-04-17 13:42:34 +08:00
7666f688b3
*: add stats version in slow_query and slow log. ( #10082 )
2019-04-15 18:04:48 +08:00
2e14068ee1
*: improve NULL count estimation for single column index ( #9474 )
2019-03-30 19:22:30 +08:00
451f54e25e
statistics: unify log format in package statistics ( #9534 )
2019-03-18 16:59:56 +08:00
c5c30912db
statistics: set correlation when loading needed column histogram ( #9701 )
2019-03-14 16:28:53 +08:00
c0ca027f51
stats: fix data race when updating correlation ( #9594 )
2019-03-09 14:47:00 +08:00
69f2749154
executor: only show valid columns in stats_histogram ( #9487 )
2019-02-28 13:06:38 +08:00
45f9d6a00f
statistics: compute and store column order correlation with handle ( #9315 )
2019-02-27 11:32:00 +08:00
46ead360cc
statistics: add PhysicalID to Column ( #9394 )
2019-02-22 17:30:31 +08:00
ec833bc4d2
*: fix some lints produced by golangci-lint ( #8999 )
2019-01-16 16:44:49 +08:00
82d2726300
planner, statistics: build new histogram using range information ( #7921 )
2019-01-14 20:33:36 +08:00
8be09da457
stats: fix panic when dumping stats ( #8448 )
2018-11-26 21:08:02 +08:00
