Search results

Do not copy json data to the chunk in hash join probe

type/enhancementThe issue or PR belongs to an enhancement.The issue or PR belongs to an enhancement.

Status: Open.

#64206 In pingcap/tidb;

· xzhangxian1008 opened on Oct 31, 2025

Support distinct aggregation function for parallel hash aggregation

type/feature-requestCategorizes issue or PR as related to a new feature.Categorizes issue or PR as related to a new feature.

Status: Open.

#64065 In pingcap/tidb;

· xzhangxian1008 opened on Oct 21, 2025

planner: incorrect join reorder for outer-join

affects-6.5This bug affects the 6.5.x(LTS) versions.This bug affects the 6.5.x(LTS) versions.

affects-7.1This bug affects the 7.1.x(LTS) versions.This bug affects the 7.1.x(LTS) versions.

affects-7.5This bug affects the 7.5.x(LTS) versions.This bug affects the 7.5.x(LTS) versions.

affects-8.1This bug affects the 8.1.x(LTS) versions.This bug affects the 8.1.x(LTS) versions.

affects-8.5This bug affects the 8.5.x(LTS) versions.This bug affects the 8.5.x(LTS) versions.

severity/major

sig/plannerSIG: PlannerSIG: Planner

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#63887 In pingcap/tidb;

· xzhangxian1008 opened on Oct 10, 2025

"Unlock of unlocked mutex" error happens in memory tracker

affects-6.5This bug affects the 6.5.x(LTS) versions.This bug affects the 6.5.x(LTS) versions.

affects-7.1This bug affects the 7.1.x(LTS) versions.This bug affects the 7.1.x(LTS) versions.

affects-7.5This bug affects the 7.5.x(LTS) versions.This bug affects the 7.5.x(LTS) versions.

affects-8.1This bug affects the 8.1.x(LTS) versions.This bug affects the 8.1.x(LTS) versions.

affects-8.5This bug affects the 8.5.x(LTS) versions.This bug affects the 8.5.x(LTS) versions.

severity/major

sig/executionSIG executionSIG execution

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#63632 In pingcap/tidb;

· xzhangxian1008 opened on Sep 20, 2025

Prealloc memory for HashJoinV2

type/enhancementThe issue or PR belongs to an enhancement.The issue or PR belongs to an enhancement.

Status: Open.

#62854 In pingcap/tidb;

· xzhangxian1008 opened on Aug 6, 2025

Call <code>Close</code> of child executor in a way similiar <code>defer</code>

type/enhancementThe issue or PR belongs to an enhancement.The issue or PR belongs to an enhancement.

Status: Open.

#62236 In pingcap/tidb;

· xzhangxian1008 opened on Jul 7, 2025

CTE can not be pushed down to tiflash

may-affects-6.5

may-affects-7.1

may-affects-7.5

may-affects-8.1

may-affects-8.5

severity/major

sig/plannerSIG: PlannerSIG: Planner

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#61758 In pingcap/tidb;

· xzhangxian1008 opened on Jun 16, 2025

CTE can not be pushed down to tiflash with window

severity/moderate

sig/plannerSIG: PlannerSIG: Planner

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#61682 In pingcap/tidb;

· xzhangxian1008 opened on Jun 11, 2025

Incorrect unix_timestamp result when utc time can be mapped to multi time in one zone

impact/wrong-result

may-affects-5.4This bug maybe affects 5.4.x versions.This bug maybe affects 5.4.x versions.

may-affects-6.1

may-affects-6.5

may-affects-7.1

may-affects-7.5

may-affects-8.1

may-affects-8.5

severity/major

sig/executionSIG executionSIG execution

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#59340 In pingcap/tidb;

· xzhangxian1008 opened on Feb 8, 2025

Window function returns incorrect result

impact/wrong-result

may-affects-5.4This bug maybe affects 5.4.x versions.This bug maybe affects 5.4.x versions.

may-affects-6.1

may-affects-6.5

may-affects-7.1

may-affects-7.5

may-affects-8.1

may-affects-8.5

severity/major

sig/executionSIG executionSIG execution

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#58879 In pingcap/tidb;

· xzhangxian1008 opened on Jan 13, 2025

Show warning when user modify system variable <code>tidb_enable_concurrent_hashagg_spill</code>

type/enhancementThe issue or PR belongs to an enhancement.The issue or PR belongs to an enhancement.

Status: Open.

#53913 In pingcap/tidb;

· xzhangxian1008 opened on Jun 11, 2024