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Issues: pingcap/tidb

RFC: reorganize packages layout for this repository
#41241 opened Feb 9, 2023 by bb7133
Open 17
flaky test list
#41316 opened Feb 12, 2023 by hawkingrei
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Issues list

planner: can't push down predicates with generated columns down through UnionScan type/bug This issue is a bug.
#54870 opened Jul 24, 2024 by qw4990
1
planner: NDV estimation formula is too naive epic/cardinality-estimation the optimizer cardinality estimation sig/planner SIG: Planner type/enhancement
#54812 opened Jul 22, 2024 by qw4990
planner: Plan Cache is not compatible with CTE sig/planner SIG: Planner type/enhancement
#54130 opened Jun 20, 2024 by qw4990
1
planner: instance/node level plan cache - phase 1 type/enhancement
#54057 opened Jun 17, 2024 by qw4990
1
planner: plan cache can't support SQLs like "where pk_col1 = ? and pk_col2 = ? and pk_col3 in (1, 2, 3)" sig/planner SIG: Planner type/enhancement
#53962 opened Jun 12, 2024 by qw4990
1
planner: large cardinality estimation error for IndexJoin with IndexLookup when join estimation is zero affects-8.1 epic/cardinality-estimation the optimizer cardinality estimation report/customer Customers have encountered this bug. sig/planner SIG: Planner type/enhancement
#51379 opened Feb 28, 2024 by qw4990
2
planner: Plan Binding Enhancement sig/planner SIG: Planner type/enhancement
#51347 opened Feb 27, 2024 by qw4990
6 of 18 tasks
@hawkingrei @qw4990 @time-and-fate
4
planner: the optimizer can't produce an optimal plan for queries with sub-queries in select list sig/planner SIG: Planner type/enhancement
#51225 opened Feb 21, 2024 by qw4990
5
planner: cannot choose the best predicate to build IndexRangeScan for correlated queries in some cases sig/planner SIG: Planner type/enhancement
#51148 opened Feb 19, 2024 by qw4990
planner: the optimizer can't produce an optimal plan for queries with sub-queries in select list since it always decorrelate sub-queries affects-5.4 This bug affects 5.4.x versions. affects-6.1 affects-6.5 affects-7.1 affects-7.5 report/customer Customers have encountered this bug. sig/planner SIG: Planner type/enhancement
#51116 opened Feb 18, 2024 by qw4990
2
planner: track the time consumption of analyze correctly component/statistics sig/planner SIG: Planner type/enhancement
#51030 opened Feb 7, 2024 by qw4990
planner: prevent the optimizer from using different versions of stats of a table during optimization component/statistics epic/cardinality-estimation the optimizer cardinality estimation sig/planner SIG: Planner type/enhancement
#50281 opened Jan 10, 2024 by qw4990
planner: Projection operator leads to join order failure and leading hint cannot take effect sig/planner SIG: Planner type/enhancement
#50229 opened Jan 9, 2024 by qw4990
@hawkingrei @qw4990 @winoros
planner: large outer-join cardinality estimation error when there are multiple join keys epic/cardinality-estimation the optimizer cardinality estimation found/gs found by gs sig/planner SIG: Planner type/enhancement
#49893 opened Dec 28, 2023 by qw4990
@qw4990 @time-and-fate
2
planner: the cost model considers offload and cache-miss for TiDB serverless epic/cost-model the optimizer cost model sig/planner SIG: Planner type/enhancement
#48780 opened Nov 22, 2023 by qw4990
planner: utilize the order property of leading columns in index sig/planner SIG: Planner type/enhancement
#48241 opened Nov 2, 2023 by qw4990
3
planner: the optimizer cannot select the best IndexMerge plan automatically sig/planner SIG: Planner type/enhancement
#48088 opened Oct 30, 2023 by qw4990
planner: zero estimation result if all values are in TopN epic/cardinality-estimation the optimizer cardinality estimation sig/planner SIG: Planner type/enhancement
#47400 opened Oct 5, 2023 by qw4990
@hawkingrei
1
planner: support using IndexMerge to access MVIndex in more scenarios sig/planner SIG: Planner type/enhancement
#46319 opened Aug 22, 2023 by qw4990
planner: optimizer statistics cost too much amount of memory component/statistics sig/planner SIG: Planner type/enhancement
#46149 opened Aug 16, 2023 by qw4990
@hawkingrei @winoros
planner: cancel the current analyze job instead of using 1 as the sample rate if cannot access PD when the optimizer determine analyze sample rate component/statistics sig/planner SIG: Planner type/enhancement
#45997 opened Aug 11, 2023 by qw4990
@winoros
planner: tidb_enable_new_only_full_group_by_check cause plan-cache hit ratio regression on sysbench affects-7.1 epic/plan-cache sig/planner SIG: Planner type/enhancement type/performance
#45519 opened Jul 24, 2023 by qw4990
@qw4990
planner: cannot use IndexJoin due to implicit cast sig/planner SIG: Planner type/enhancement
#45182 opened Jul 5, 2023 by qw4990
1
planner: 'regexp' cannot cache the pattern compile result if the pattern is a plan-cache parameter component/expression epic/plan-cache sig/planner SIG: Planner type/enhancement
#45101 opened Jun 30, 2023 by qw4990
@qw4990
1
planner: non-prep plan cache support negative numbers epic/plan-cache sig/planner SIG: Planner type/enhancement
#44977 opened Jun 27, 2023 by qw4990
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