375b71b501
stats: resolve the constant selectivity when handling DNF exprs ( #31242 )
...
close pingcap/tidb#31096
2022-01-07 18:28:38 +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
8550dbb216
*: add cardinality estimation trace for Selectivity ( #29883 )
2021-11-29 17:01:52 +08:00
d15ca2a869
planner: unify the argument of range functions to use SessionCtx instead of StatementContext ( #29999 )
2021-11-23 12:35:51 +08:00
94e30df8e2
parser: fix compiling, add unit tests ( #28700 )
2021-10-11 23:15:25 +08:00
a0de91fa06
statistics: fix a error check to prevent nil dereference ( #27295 )
2021-08-17 17:04:00 +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
83181c6bcb
planner: steady expression index selection when having duplicate expressions ( #25826 )
2021-08-02 14:47:06 +08:00
8945d64362
planner: fix the panic that the index's range length may exceed its original column count ( #25267 )
2021-06-18 12:04:38 +08:00
f1a48216b2
statistics: fix some potential panic in statistics ( #23988 )
2021-04-15 21:15:53 +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
27a9b3e8f6
statistics: fix stack overflow when use DNF expr immediately after add column ( #22169 )
2021-01-06 12:08:10 +08:00
151ef8492b
statistics: prioritize low selectivity indexes in the greedy search procedure of Selectivity() ( #20038 )
2020-09-22 19:17:42 +08:00
0684dba6c8
util/ranger: extract multi-column DNF conditions as access conditions ( #19211 )
2020-09-17 20:08:34 +08:00
b78f4896fe
statistics, util/ranger: improve selectivity calculation for DNF filters ( #18741 )
2020-08-27 15:40:12 +08:00
f172a1e08a
planner: make some access paths check fit the clustered index ( #18998 )
...
* planner: make some access paths check fit the clustered index
* add test
* add test for outer join elimination
* make test stable
* fix test
Co-authored-by: ti-srebot <66930949+ti-srebot@users.noreply.github.com >
2020-08-10 15:33:17 +08:00
60dbf2b119
planner: rename table path to IntHandlePath ( #17962 )
...
Co-authored-by: lysu <sulifx@gmail.com >
2020-06-15 11:00:20 +08:00
cc24101d97
statistics: fix repetitive selectivity accounting and stabilify the result ( #15536 )
2020-04-03 15:50:09 +08:00
7b09a11f17
planner,stats: don't re-calculate the index's ranges ( #12856 )
2019-12-04 17:19:48 +08:00
9d74d6404f
planner, executor: index join enhancement ( #8471 )
2019-04-29 11:07:15 +08:00
e5f734e54c
*: move the Handle of stats to single package. ( #10149 )
2019-04-17 13:42:34 +08:00
46ead360cc
statistics: add PhysicalID to Column ( #9394 )
2019-02-22 17:30:31 +08:00
9bdba3a5d1
plan: handle DNF expressions in Selectivity ( #9282 )
2019-02-13 10:53:12 +08:00
82d2726300
planner, statistics: build new histogram using range information ( #7921 )
2019-01-14 20:33:36 +08:00
b74d0283a2
statistics: fix pseudo estimation for correlated column ( #8734 )
2018-12-25 22:40:38 +08:00
f7d8ca624a
plan: use Column.UniqueID in conditionChecker of ranger ( #8236 )
2018-11-12 12:45:25 +08:00
e195df2e5d
stats: fix selectivity estimation for primary key ( #8134 )
2018-11-01 20:38:08 +08:00
32b1dbd8d5
*: rename "github.com/pkg/errors" to "github.com/pingcap/errors" ( #8136 )
...
We import "github.com/pkg/errors" in the code, and actually put
the "github.com/pingcap/errors" there in the vendor path.
That's a dirty hack, and prevent the introduce of Go module.
2018-11-01 16:09:07 +08:00
89dda9d9a8
*: move parser to a separate repository ( #8036 )
2018-10-25 11:12:10 +08:00
cb03f2bec1
move from juju/errors to pkg/errors ( #7151 )
2018-09-12 15:42:20 +08:00
87c54b2610
plan, statistics: maintain HistColl in DataSource's StatsInfo ( #7385 )
2018-08-31 01:14:43 +08:00
44e6c3c2e1
plan, stats: fix inconsistent row count estimation ( #7233 )
2018-08-06 17:39:33 +08:00
25f1e808f5
Use the revive linter. ( #7197 )
2018-07-31 13:19:09 +08:00
34d8fd8d8d
plan, statistics: extract histColl struct ( #6860 )
2018-07-13 14:42:07 +08:00
c5524cb238
plan, executor: use CorrelatedColumn to calculate range. ( #6779 )
2018-06-28 16:23:05 +08:00
326ad271d6
plan: enhance the row count estimation when correlated column exists ( #6911 )
2018-06-27 13:33:15 +08:00
c348afebf1
stats: refine row count estimation ( #6746 )
2018-06-04 20:45:30 +08:00
7ea70d5433
statistics: uniform the calculation of pseudo stats. ( #6483 )
2018-05-09 11:31:06 +08:00
12dbd32854
*: rename NewRange to Range. ( #6368 )
2018-04-25 13:13:04 +08:00
58326c844e
stats: fix pseudo selectivity for primary key ( #6302 )
2018-04-18 10:10:03 +08:00
905eda7ff5
stats: fix row estimation for pseudo unique key ( #6199 )
2018-04-02 20:27:58 +08:00
4f991afb10
*: session context passed to newBaseBuiltinFuncWithTp should not be nil ( #6178 )
2018-03-29 16:12:36 +08:00
12c87929b8
*:fix some golint && ineffassign && misspell to improve GoReport Result ( #5867 )
2018-02-23 19:31:05 +08:00
4e1a114e68
*: move package context to sessionctx ( #5890 )
2018-02-22 18:03:38 +08:00
51c47a4ddc
plan: The stats of some table is outdated, we use pseudo to estimate. ( #5802 )
2018-02-08 11:22:21 +08:00
ac4229aed0
plan, ranger: index range calculation enhancement. ( #5611 )
2018-01-31 15:35:59 +08:00
c45111d9f6
stats: use more compact structure for histograms ( #5539 )
...
* stats: use more compact structure for histograms
* address comments
* address comments
* refine code
* address comment
2018-01-05 20:43:01 +08:00
8b149c3323
Prealloc / collides with package name ( #5560 )
2018-01-05 19:15:54 +08:00
b901867b83
util/ranger: change BuildRange to build column/index/table range ( #5509 )
2017-12-27 06:16:19 -06:00
fa62e9fd01
*: merge ranger.IndexRange and ranger.ColumnRange. ( #5485 )
2017-12-26 16:08:36 +08:00
