75a031af4a
expression: check NotNullFlag of columns when simplifying binary operations ( #24049 )
2021-04-15 23:03:53 +08:00
04e5137f48
*: use explain format = 'brief' for tests ( #22677 )
2021-02-22 17:50:06 +08:00
f687ebd91c
planner: fix correlated aggregates which should be evaluated in outer query ( #21431 )
2020-12-18 14:51:35 +08:00
bb675c0d63
types: check KindNull / KindMinNotNull / KindMaxValue when comparing datums ( #19259 )
...
Co-authored-by: ti-srebot <66930949+ti-srebot@users.noreply.github.com >
2020-08-24 16:47:52 +08:00
b98c88c948
infoschema/executor: support field expression in show index and related infoschema ( #14400 )
2020-02-20 19:04:48 +08:00
74bc00dfa9
Improve the performance of WindowExec by using multi-thread hash grouping ( #14238 )
2020-01-16 21:04:16 +08:00
c796205825
planner: fix bug for logical rule outer join elimination ( #13947 )
2019-12-10 15:56:26 +08:00
96d4b1fe3c
planner: display cop tasks when explain format is "dot" ( #12225 )
2019-09-18 14:19:45 +08:00
39f83c1220
planner: support predicate pushdown for Window ( #11915 )
2019-08-29 14:23:36 +08:00
103cbcd5c5
planner: rewrite in as eq when the rhs list has only one item
2019-08-16 11:07:59 +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
b17848b880
stats: fix estimation for time equal conditions ( #11511 )
2019-07-29 19:56:50 +08:00
3847ec8466
planner: fix a corner case in column pruning rule ( #10974 )
2019-07-01 12:52:55 +08:00
0d984d8ffc
executor: locks key in point get executor for pessimistic transaction ( #10972 )
2019-06-28 14:06:43 +08:00
0106361cd9
expression: let PushDownNot does not change the argument ( #10363 )
2019-05-06 16:22:19 +08:00
8800ec195a
plan: push down constant filters over join properly ( #9848 )
2019-04-04 15:50:32 +08:00
4454461609
planner: fix point get with PK and UK ( #9737 )
2019-03-15 12:54:29 +08:00
6a99fa25d7
executor: fix union dual table order by but not sort ( #8251 )
2018-11-13 15:27:18 +08:00
19c01f40e0
planner: fix error caused by different length between inner and outer OrderByItems ( #8273 )
2018-11-13 11:17:32 +08:00
cd5ffb3b32
planner: support join elimination rule ( #8021 )
2018-11-09 21:31:29 +08:00
60d05bd759
planner: eliminate ifnull in expression rewriting process ( #7996 )
2018-11-02 12:50:27 +08:00
696ef7bae2
plan: convert in subquery to agg and inner join ( #7531 )
2018-10-30 19:19:32 +08:00
a4cff40a18
support _tidb_rowid for table scan range ( #8047 )
2018-10-25 20:35:45 +08:00
6e525f9e62
planner: eliminate if null on non null column ( #7924 )
2018-10-17 22:20:32 +08:00
d60a1a227b
plan: build anti semi join for NOT EXISTS ( #7842 )
2018-10-09 16:57:15 +08:00
177c155161
plan: exclude IsNull from constant propagation ( #7835 )
2018-10-08 14:47:13 +08:00
7b4686d8c2
expression, plan: aggressive constant fold for null parameter expression to simplify outer join ( #7696 )
2018-09-23 19:46:52 +08:00
9f25032666
plan: fix predicate push down for UnionScan ( #7695 )
2018-09-17 14:44:53 +08:00
d7d13091da
ranger: merge multiple EQ or In expressions if possible ( #7577 )
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Convert empty range scan to TableDual after expression merge.
2018-09-10 17:46:37 +08:00
ec8fb0d38c
*: refine IntColumn <cmp> NonIntConstant ( #7108 )
2018-07-26 09:40:47 +08:00
c5524cb238
plan, executor: use CorrelatedColumn to calculate range. ( #6779 )
2018-06-28 16:23:05 +08:00
db4888a697
plan, parser: fix the wrong result of the UNION statement ( #6752 )
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tidb diff result with mysql when mix use union and union-all fix #6731
- rename `selectStmt.UnionDistinct` to `selectStmt.IsAfterUnionDistinct`
- add explain test
- remove useless `unionStmt.Distinct` and `selectList.Distinct`
- refactor use golang slice, remove dup code
- return WrongNumColumnInSelect error and add test case
2018-06-07 17:08:26 +08:00
66c41128ca
expression: improve constant folding of UDF if & ifnull ( #6677 )
2018-06-07 11:38:57 +08:00
33b2a7abbf
plan: fix row count estimation for limit ( #6679 )
2018-05-29 20:17:14 +08:00
0b1b523a81
*:move explain_test to tidb repository ( #6555 )
2018-05-17 23:55:15 +08:00
