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Update releases/release-6.4.0.md
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qiancai authored Nov 17, 2022
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Expand Up @@ -385,7 +385,7 @@ In v6.4.0-DMR, the key new features and improvements are as follows:
- 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 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) @[ekexium](https://github.com/ekexium)
- 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 results [#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 results [#18216](https://github.com/pingcap/tidb/issues/18216) @[winoros](https://github.com/winoros)
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