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enable tidb_enable_inl_join_inner_multi_pattern by default
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songrijie committed Sep 11, 2024
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3 changes: 2 additions & 1 deletion releases/release-8.4.0.md
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| 变量名 | 修改类型(包括新增/修改/删除) | 描述 |
|--------|------------------------------|------|
| | | |
| [`tidb_enable_inl_join_inner_multi_pattern`](/system-variables.md#tidb_enable_inl_join_inner_multi_pattern-从-v700-版本开始引入) | 修改 | 默认值改为 `ON`。当内表上有 `Selection``Projection` 算子时默认支持 Index Join |
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- 优化处理大量数据的 DML 性能 [#50215](https://github.com/pingcap/tidb/issues/50215) @[ekexium](https://github.com/ekexium) **tw@qiancai** <!--1860-->
- 优化器估行的最小值为`1`,与其他数据库行为一致 [#47400](https://github.com/pingcap/tidb/issues/47400) @[terry1purcell](https://github.com/terry1purcell) **tw@Oreoxmt** <!--1929-->
- 为日志表 [`mysql.tidb_runaway_queries`](/mysql-schema/mysql-schema.md#runaway-queries-相关系统表) 增加写入控制,降低并发大量写入引发的开销 [#issue号](链接) @[HuSharp](https://github.com/HuSharp) <!--1908--> **tw@lilin90**
- 当内表上有 `Selection``Projection` 算子时默认支持 Index Join [#issue号](链接) @[winoros](https://github.com/winoros) **tw@qiancai** <!--1860-->

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