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Add interactive_timeout variable (#4172) #4220

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Aug 7, 2020
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Add interactive_timeout variable (#4172) #4220

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6 changes: 6 additions & 0 deletions system-variables.md
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Expand Up @@ -78,6 +78,12 @@ SET GLOBAL tidb_distsql_scan_concurrency = 10;
>
> `max_execution_time` 目前对所有类型的语句生效，并非只对 `SELECT` 语句生效，与 MySQL 不同（只对`SELECT` 语句生效）。实际精度在 100ms 级别，而非更准确的毫秒级别。

## `interactive_timeout`

- 作用域：SESSION | GLOBAL
- 默认值：28800
- 该变量表示交互式用户会话的空闲超时，单位为秒。交互式用户会话是指使用 `CLIENT_INTERACTIVE` 选项调用 [`mysql_real_connect()`](https://dev.mysql.com/doc/c-api/5.7/en/mysql-real-connect.html) API 建立的会话（例如：MySQL shell 客户端）。该变量与 MySQL 完全兼容。

## `sql_mode`

- 作用域：SESSION | GLOBAL
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