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sql: update time-zone.md #876

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Sep 11, 2018
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sql: update time-zone.md #876

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Update time-zone.md
zhexuany Sep 11, 2018
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Update time-zone.md
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@zhexuany
zhexuany authored Sep 11, 2018
commit 139fa89b799b47231df8087fd8ab4a01129bfec0
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Expand Up @@ -5,7 +5,7 @@ category: user guide

# 时区支持

TiDB 使用的时区由 `time_zone` 全局变量和 session 变量决定。`time_zone` 的默认值是 `System`，`System` 对应的实际时区在TiDB 集群 bootstrap 初始化时设置。具体逻辑如下:
TiDB 使用的时区由 `time_zone` 全局变量和 session 变量决定。`time_zone` 的默认值是 `System`，`System` 对应的实际时区在 `TiDB` 集群 bootstrap 初始化时设置。具体逻辑如下:
* 优先使用 `TZ` 环境变量
* 如果失败，则从 `/etc/localtime` 的实际软链地址提取。
* 如果上面两种都失败则使用 `UTC` 作为系统时区。
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