add v6.4 release notes #11245

qiancai · 2022-11-09T02:36:43Z

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ti-chi-bot · 2022-11-09T02:36:45Z

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releases/release-6.4.0.md

… version

releases/release-6.4.0.md

TomShawn · 2022-11-11T11:38:06Z

releases/release-6.4.0.md

+    - 修复新建索引之后有可能导致的数据索引不一致的问题 [#38165](https://github.com/pingcap/tidb/issues/38165) @[tangenta](https://github.com/tangenta)
+    - 修复关于 `information_schema.TIKV_REGION_STATUS` 表的权限问题 [#38407](https://github.com/pingcap/tidb/issues/38407) @[CbcWestwolf](https://github.com/CbcWestwolf)
+    - 修复 CTE 在 join 时可能得到错误结果的问题 [#38170](https://github.com/pingcap/tidb/issues/38170) @[wjhuang2016](https://github.com/wjhuang2016)
+    - 修复 CTE 在 union 时可能得到错误结果的问题 [#37928](https://github.com/pingcap/tidb/issues/37928) @[YangKeao](https://github.com/YangKeao)
+    - 修复监控 transaction region num panel 信息不准确问题 [#38139](https://github.com/pingcap/tidb/issues/38139) @[jackysp](github.com/jackysp)
+    - 修复 [`tidb_constraint_check_in_place_pessimistic`](/system-variables.md#tidb_constraint_check_in_place_pessimistic-从-v630-版本开始引入) 可能影响内部事务问题，修改该变量作用域为 session [#38766](https://github.com/pingcap/tidb/issues/38766)
+- 修复了条件在某些场景下被错误下推 projection 的问题 [#35623](https://github.com/pingcap/tidb/issues/35623)@[Reminiscent](https://github.com/Reminiscent)
+- 修复了 `AND` `OR` 条件的 `isNullRejected` 的错误导致查询结果错误的问题 [#38304]( https://github.com/pingcap/tidb/issues/38304) @[Yisaer](https://github.com/Yisaer)
+- 修复了外连接消除时没有考虑 `GROUP_CONCAT` 内部的 `order by` 导致查询出错的问题 [#18216](https://github.com/pingcap/tidb/issues/18216) @[winoros](https://github.com/winoros) 
+- 修复了错误下推的条件被 join reorder 丢弃后导致查询结果错误的问题 [#38736](https://github.com/pingcap/tidb/issues/38736) @[winoros](https://github.com/winoros) 


Suggested change

- 修复新建索引之后有可能导致的数据索引不一致的问题 [#38165](https://github.com/pingcap/tidb/issues/38165) @[tangenta](https://github.com/tangenta)

- 修复关于 `information_schema.TIKV_REGION_STATUS` 表的权限问题 [#38407](https://github.com/pingcap/tidb/issues/38407) @[CbcWestwolf](https://github.com/CbcWestwolf)

- 修复 CTE 在 join 时可能得到错误结果的问题 [#38170](https://github.com/pingcap/tidb/issues/38170) @[wjhuang2016](https://github.com/wjhuang2016)

- 修复 CTE 在 union 时可能得到错误结果的问题 [#37928](https://github.com/pingcap/tidb/issues/37928) @[YangKeao](https://github.com/YangKeao)

- 修复监控 transaction region num panel 信息不准确问题 [#38139](https://github.com/pingcap/tidb/issues/38139) @[jackysp](github.com/jackysp)

- 修复 [`tidb_constraint_check_in_place_pessimistic`](/system-variables.md#tidb_constraint_check_in_place_pessimistic-从-v630-版本开始引入) 可能影响内部事务问题，修改该变量作用域为 session [#38766](https://github.com/pingcap/tidb/issues/38766)

- 修复了条件在某些场景下被错误下推 projection 的问题 [#35623](https://github.com/pingcap/tidb/issues/35623)@[Reminiscent](https://github.com/Reminiscent)

- 修复了 `AND` `OR` 条件的 `isNullRejected` 的错误导致查询结果错误的问题 [#38304]( https://github.com/pingcap/tidb/issues/38304) @[Yisaer](https://github.com/Yisaer)

- 修复了外连接消除时没有考虑 `GROUP_CONCAT` 内部的 `order by` 导致查询出错的问题 [#18216](https://github.com/pingcap/tidb/issues/18216) @[winoros](https://github.com/winoros)

- 修复了错误下推的条件被 join reorder 丢弃后导致查询结果错误的问题 [#38736](https://github.com/pingcap/tidb/issues/38736) @[winoros](https://github.com/winoros)

- Fix the potential issue of index consistency that occurs after creating a new index [#38165](https://github.com/pingcap/tidb/issues/38165) @[tangenta](https://github.com/tangenta)

- Fix a permission issue of the `information_schema.TIKV_REGION_STATUS` table [#38407](https://github.com/pingcap/tidb/issues/38407) @[CbcWestwolf](https://github.com/CbcWestwolf)

- Fix the issue that the join result of common table expressions might be wrong [#38170](https://github.com/pingcap/tidb/issues/38170) @[wjhuang2016](https://github.com/wjhuang2016)

- Fix the issue that the union result of common table expressions might be wrong [#37928](https://github.com/pingcap/tidb/issues/37928) @[YangKeao](https://github.com/YangKeao)

- Fix the issue that the information in the **transaction region num** monitoring panel is incorrect [#38139](https://github.com/pingcap/tidb/issues/38139) @[jackysp](https://github.com/jackysp)

- Fix the issue that the system variable [`tidb_constraint_check_in_place_pessimistic`](/system-variables.md#tidb_constraint_check_in_place_pessimistic-new-in-v630) might affect internal transactions. The variable scope is modified to SESSION. [#38766](https://github.com/pingcap/tidb/issues/38766)

- Fix the issue that conditions in a query are mistakenly pushed down to projections [#35623](https://github.com/pingcap/tidb/issues/35623)@[Reminiscent](https://github.com/Reminiscent)

- Fix the issue that the wrong `isNullRejected` check results for `AND` and `OR` cause wrong query result [#38304]( https://github.com/pingcap/tidb/issues/38304) @[Yisaer](https://github.com/Yisaer)

- Fix the issue that `ORDER BY` in `GROUP_CONCAT` is not considered when the outer join is eliminated, which causes wrong query result [#18216](https://github.com/pingcap/tidb/issues/18216) @[winoros](https://github.com/winoros)

- Fix the issue of wrong query result that occurs when the mistakenly pushed-down conditions are discarded by join reorder [#38736](https://github.com/pingcap/tidb/issues/38736) @[winoros](https://github.com/winoros)

releases/release-6.4.0.md

Co-authored-by: Aolin <[email protected]>

qiancai · 2022-11-16T11:07:15Z

releases/release-6.4.0.md

+
+    TiDB v6.4.0 enables the synchronously loading statistics feature by default. This feature allows TiDB to synchronously load large-sized statistics (such as histograms, TopN, and Count-Min Sketch statistics) into memory when you execute SQL statements, which improves the completeness of statistics for SQL optimization.
+
+    [User document](/system-variable.md#tidb_stats_load_sync_wait-new-in-v540)


Suggested change

[User document](/system-variable.md#tidb_stats_load_sync_wait-new-in-v540)

[User document](/system-variables.md#tidb_stats_load_sync_wait-new-in-v540)

releases/release-6.4.0.md

…notes

releases/release-6.4.0.md

qiancai · 2022-11-17T05:46:13Z

/merge

ti-chi-bot · 2022-11-17T05:46:16Z

This pull request has been accepted and is ready to merge.

Commit hash: 96a5dfc

ti-chi-bot · 2022-11-17T05:48:34Z

In response to a cherrypick label: new pull request created: #11346.

* Create release-6.4.0.md * Update release-6.4.0.md * Apply suggestions from code review * Apply suggestions from code review * add translations * Apply suggestions from code review * add translation * update improvements, bug fixes, contributors using the latest Chinese version * translate dm, ticdc, and br new features * add translation for compatibility changes * Apply suggestions from code review * Apply suggestions from code review Co-authored-by: xixirangrang <[email protected]> * update tikv and pd sections * Update releases/release-6.4.0.md * Update releases/release-6.4.0.md * Update releases/release-6.4.0.md * Apply suggestions from code review Co-authored-by: shichun-0415 <[email protected]> * Apply suggestions from code review * add translation of improvements and bug fixes (TiFlash, TiDB Lightning, and TiDB Dashboard) * Update releases/release-6.4.0.md * apply suggestions from code review * Apply suggestions from code review Co-authored-by: Grace Cai <[email protected]> * Apply suggestions from code review Co-authored-by: xixirangrang <[email protected]> * add translation for key features Co-authored-by: Ran <[email protected]> * Update releases/release-6.4.0.md * Apply suggestions from code review * Update releases/release-6.4.0.md Co-authored-by: shichun-0415 <[email protected]> * Apply suggestions from code review Co-authored-by: Aolin <[email protected]> Co-authored-by: shichun-0415 <[email protected]> Co-authored-by: xixirangrang <[email protected]> * remove duplicate white spaces * Apply suggestions from code review Co-authored-by: Daniël van Eeden <[email protected]> Co-authored-by: Aolin <[email protected]> Co-authored-by: xixirangrang <[email protected]> * add new updates * remove the writer information * Update release-6.4.0.md * Apply suggestions from code review Co-authored-by: Ping Yu <[email protected]> * fix typo * Apply suggestions from code review Co-authored-by: Aolin <[email protected]> * unify the format of user document reference * Update releases/release-6.4.0.md * fix broken links * fix some errors * Update release-6.4.0.md * Apply suggestions from code review * Update releases/release-6.4.0.md Co-authored-by: qiancai <[email protected]> Co-authored-by: TomShawn <[email protected]> Co-authored-by: Ran <[email protected]> Co-authored-by: Aolin <[email protected]> Co-authored-by: shichun-0415 <[email protected]> Co-authored-by: xixirangrang <[email protected]> Co-authored-by: Aolin <[email protected]> Co-authored-by: shichun-0415 <[email protected]> Co-authored-by: Daniël van Eeden <[email protected]> Co-authored-by: Ping Yu <[email protected]>

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add v6.4 release notes pingcap/docs-cn#11835

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add v6.4 release notes (#11245) #11346

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add v6.4 release notes (#11835) pingcap/docs-cn#12034

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add v6.4 release notes #11245

add v6.4 release notes #11245

qiancai commented Nov 9, 2022 •

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		TiDB v6.4.0 enables the synchronously loading statistics feature by default. This feature allows TiDB to synchronously load large-sized statistics (such as histograms, TopN, and Count-Min Sketch statistics) into memory when you execute SQL statements, which improves the completeness of statistics for SQL optimization.

		[User document](/system-variable.md#tidb_stats_load_sync_wait-new-in-v540)

	[User document](/system-variable.md#tidb_stats_load_sync_wait-new-in-v540)
	[User document](/system-variables.md#tidb_stats_load_sync_wait-new-in-v540)

add v6.4 release notes #11245

add v6.4 release notes #11245

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qiancai commented Nov 9, 2022 • edited Loading

First-time contributors' checklist

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Which TiDB version(s) do your changes apply to? (Required)

What is the related PR or file link(s)?

Do your changes match any of the following descriptions?

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