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shichun-0415 authored Sep 30, 2022
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6 changes: 3 additions & 3 deletions releases/release-6.3.0.md
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Expand Up @@ -138,9 +138,9 @@ In v6.3.0-DMR, the key new features and improvements are as follows:

### Ease of use

* Improve compatibility of SQL-based data Placement Rules [#37171](https://github.com/pingcap/tidb/issues/37171) @[lcwangchao](https://github.com/lcwangchao)
* Address the conflict between SQL-based data Placement Rules and TiFlash replicas [#37171](https://github.com/pingcap/tidb/issues/37171) @[lcwangchao](https://github.com/lcwangchao)

TiDB v6.0.0 provides SQL-based data Placement Rules. But this feature is not compatible with TiFlash due to conflicts in implementation mechanisms. TiDB v6.3.0 optimizes this feature, and [improves compatibility of SQL-based data Placement Rules and TiFlash](/placement-rules-in-sql.md#known-limitations).
TiDB v6.0.0 provides SQL-based data Placement Rules. But this feature conflicts with TiFlash replicas due to implementation issues. TiDB v6.3.0 optimizes the implementation mechanisms, and [resolves the conflict between SQL-based data Placement Rules and TiFlash](/placement-rules-in-sql.md#known-limitations).

### MySQL compatibility

Expand Down Expand Up @@ -337,7 +337,7 @@ Since v6.3.0, TiCDC no longer supports configuring Pulsar sink. [kop](https://gi
- Fix the issue that casting string to string goes wrong in queries with `UNION` [#31678](https://github.com/pingcap/tidb/issues/31678) @[cbcwestwolf](https://github.com/cbcwestwolf)
- Fix the wrong result that occurs when enabling dynamic mode in partitioned tables for TiFlash [#37254](https://github.com/pingcap/tidb/issues/37254) @[wshwsh12](https://github.com/wshwsh12)
- Fix the issue that the cast and comparison between binary strings and JSON in TiDB are incompatible with MySQL [#31918](https://github.com/pingcap/tidb/issues/31918) [#25053](https://github.com/pingcap/tidb/issues/25053) @[YangKeao](https://github.com/YangKeao)
- Fix the issue that `JSON_OBJECTAGG ` and `JSON_ARRAYAGG` in TiDB are not compatible with MySQL on binary values [#25053](https://github.com/pingcap/tidb/issues/25053) @[YangKeao](https://github.com/YangKeao)
- Fix the issue that `JSON_OBJECTAGG` and `JSON_ARRAYAGG` in TiDB are not compatible with MySQL on binary values [#25053](https://github.com/pingcap/tidb/issues/25053) @[YangKeao](https://github.com/YangKeao)
- Fix the issue that the comparison between JSON opaque values causes panic [#37315](https://github.com/pingcap/tidb/issues/37315) @[YangKeao](https://github.com/YangKeao)
- Fix the issue that the single precision float cannot be used in JSON aggregation funtions [#37287](https://github.com/pingcap/tidb/issues/37287) @[YangKeao](https://github.com/YangKeao)
- Fix the issue that the `UNION` operator might return unexpected empty result [#36903](https://github.com/pingcap/tidb/issues/36903) @[tiancaiamao](https://github.com/tiancaiamao)
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