wjHuang

mysql-test(filesort_merge) failed.

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## Bug Report Please answer these questions before submitting your issue. Thanks! ### 1. Minimal reproduce step (Required) https://ci.pingcap.net/blue/organizations/jenkins/tidb_ghpr_integration_common_test/detail/tidb_ghpr_integration_common_test/12349/pipeline  ### 2. What did you expect to see? (Required) ###...

add document for DDL

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Signed-off-by: wjhuang2016 ### First-time contributors' checklist - [x] I've signed [**Contributor License Agreement**](https://cla-assistant.io/pingcap/docs-cn) that's required for repo owners to accept my contribution. ### What is changed, added or deleted? (Required)...

*: force the new upgrading tidb to be owner

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### What problem does this PR solve? Issue Number: close #51269 Problem Summary: ### What changed and how does it work? ### Check List Tests - [ ] Unit test...

query using distinct and upper() function gets incorrect result

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## Bug Report Please answer these questions before submitting your issue. Thanks! ### 1. Minimal reproduce step (Required) ``` sql CREATE TABLE `t0ae88432` ( `col_80` float NOT NULL DEFAULT '7201.529',...

query panic during decodeRestoredValuesV5

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## Bug Report Please answer these questions before submitting your issue. Thanks! ### 1. Minimal reproduce step (Required) ``` SQL CREATE TABLE `t6aa5c01d` ( `col_6` varchar(159) COLLATE utf8mb4_general_ci NOT NULL,...

## Bug Report Please answer these questions before submitting your issue. Thanks! ### 1. Minimal reproduce step (Required) ``` SQL CREATE TABLE `t3ca77250` ( `col_80` json NOT NULL, `col_81` char(170)...

incorrect row estimation in having clause

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## Bug Report Please answer these questions before submitting your issue. Thanks! ### 1. Minimal reproduce step (Required) ``` SQL CREATE TABLE `t350f8f71` ( `col_65` time NOT NULL DEFAULT '14:08:47',...

support timeout for write

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**Is your feature request related to a problem? Please describe.** The file that the logger is writing is over a network. Writing a log should not be blocked forever if...

test

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### What problem does this PR solve? Issue Number: close #xxx Problem Summary: ### What changed and how does it work? ### Check List Tests - [ ] Unit test...

## Bug Report Please answer these questions before submitting your issue. Thanks! ### 1. Minimal reproduce step (Required) Put this test to real tikv test ``` SQLfunc TestAddUniqueDuplicateIndexes(t *testing.T) {...