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clarify the time zone used for parsing tidb_auto_analyze_start_time #10354

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clarify the time zone used for parsing tidb_auto_analyze_start_time #10354

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4 changes: 4 additions & 0 deletions system-variables.md
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Expand Up @@ -387,6 +387,8 @@ MPP 是 TiFlash 引擎提供的分布式计算框架，允许节点之间的数
- `tidb_auto_analyze_start_time='01:00 +0000'`
- `tidb_auto_analyze_end_time='03:00 +0000'`

参数中的时间如果包含时区信息，则使用该时区来解析；否则使用当前会话中 `time_zone` 指定的时区解析。例如 `01:00 +0000` 就是 UTC 时间的凌晨 1:00。

### `tidb_auto_analyze_ratio`

- 作用域：GLOBAL
Expand All @@ -408,6 +410,8 @@ MPP 是 TiFlash 引擎提供的分布式计算框架，允许节点之间的数
- `tidb_auto_analyze_start_time='01:00 +0000'`
- `tidb_auto_analyze_end_time='03:00 +0000'`

参数中的时间如果包含时区信息，则使用该时区来解析；否则使用当前会话中 `time_zone` 指定的时区解析。例如 `01:00 +0000` 就是 UTC 时间的凌晨 1:00。

### `tidb_max_auto_analyze_time` <span class="version-mark">从 v6.1.0 版本开始引入</span>

- 作用域：GLOBAL
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