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 <aolinz@outlook.com>

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 <hfxsd@hotmail.com> * 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 <89768198+shichun-0415@users.noreply.github.com> * 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 <qqzczy@126.com> * Apply suggestions from code review Co-authored-by: xixirangrang <hfxsd@hotmail.com> * add translation for key features Co-authored-by: Ran <huangran.alex@gmail.com> * Update releases/release-6.4.0.md * Apply suggestions from code review * Update releases/release-6.4.0.md Co-authored-by: shichun-0415 <89768198+shichun-0415@users.noreply.github.com> * Apply suggestions from code review Co-authored-by: Aolin <aolinz@outlook.com> Co-authored-by: shichun-0415 <89768198+shichun-0415@users.noreply.github.com> Co-authored-by: xixirangrang <hfxsd@hotmail.com> * remove duplicate white spaces * Apply suggestions from code review Co-authored-by: Daniël van Eeden <github@myname.nl> Co-authored-by: Aolin <aolinz@outlook.com> Co-authored-by: xixirangrang <hfxsd@hotmail.com> * add new updates * remove the writer information * Update release-6.4.0.md * Apply suggestions from code review Co-authored-by: Ping Yu <shui.yu@126.com> * fix typo * Apply suggestions from code review Co-authored-by: Aolin <aolinz@outlook.com> * 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 <qqzczy@126.com> Co-authored-by: TomShawn <41534398+TomShawn@users.noreply.github.com> Co-authored-by: Ran <huangran.alex@gmail.com> Co-authored-by: Aolin <aolin.zhang@pingcap.com> Co-authored-by: shichun-0415 <lishichun@pingcap.com> Co-authored-by: xixirangrang <hfxsd@hotmail.com> Co-authored-by: Aolin <aolinz@outlook.com> Co-authored-by: shichun-0415 <89768198+shichun-0415@users.noreply.github.com> Co-authored-by: Daniël van Eeden <github@myname.nl> Co-authored-by: Ping Yu <shui.yu@126.com>

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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

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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

What is changed, added or deleted? (Required)

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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