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releases: add tidb 5.1.2 release notes #6500

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merge from upstream master
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releases: add TiDB 5.1.2-10-06-33 release notes
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Merge branch 'update-5.1.2-10-06-33' of https://github.com/ti-srebot/…
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qiancai authored Sep 27, 2021
commit 39bc08ffce068af3446b2060ed627ea06245f0e2
6 changes: 3 additions & 3 deletions releases/release-5.1.2.md
Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,7 @@ TiDB version: 5.1.2
- Fix an issue that using a `count(distinct)` expression on multiple columns returns wrong result when the new collation is enabled [#27091](https://github.com/pingcap/tidb/issues/27091)
- Fix the result wrong that occurs when the argument of the `extract` function is a negative duration [#27236](https://github.com/pingcap/tidb/issues/27236)
- Fix the issue that inserting an invalid date does not report an error when the `SQL_MODE` is 'STRICT_TRANS_TABLES' [#26762](https://github.com/pingcap/tidb/issues/26762)
- Fix the issue that using an invalid default date does not report an error when the `SQL_MODE` is 'NO_ZERO_IN_DATE' [#26766]
- Fix the issue that using an invalid default date does not report an error when the `SQL_MODE` is 'NO_ZERO_IN_DATE' [#26766] (https://github.com/pingcap/tidb/issues/26766)

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Expand Down Expand Up @@ -79,9 +79,9 @@ TiDB version: 5.1.2

- Fix the potential wrong results of index hash join when the hash column is the `ENUM` type [#27893](https://github.com/pingcap/tidb/issues/27893)
- Fix a batch client bug that recycle idle connection might block sending requests in some rare cases [#27678](https://github.com/pingcap/tidb/pull/27678)
- Fix the compatibility issue of the overflow check by keeping the same logic as MySQL [#23897](https://github.com/pingcap/tidb/issues/23897)
- Fix the issue that the overflow check of the `FLOAT64` type is different with that of MySQL [#23897](https://github.com/pingcap/tidb/issues/23897)
- Fix the issue that TiDB returns an `unknow` error while it should return the `pd is timeout` error [#26147](https://github.com/pingcap/tidb/issues/26147)
- Fix the error of the `case when` function caused by the wrong charset and collation [#26662](https://github.com/pingcap/tidb/issues/26662)
- Fix the wrong character set and collation for the `case when` expression [#26662](https://github.com/pingcap/tidb/issues/26662)
- Fix the potential `can not found column in Schema column` error for MPP queries [#28148](https://github.com/pingcap/tidb/pull/28148)
- Fix a bug that TiDB might panic when TiFlash is shutting down [#28096](https://github.com/pingcap/tidb/issues/28096)
- Fix the issue of wrong range caused by using `enum like 'x%'` [#27130](https://github.com/pingcap/tidb/issues/27130)
Expand Down