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kill: improve kill's description #7007

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Sep 2, 2021
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kill: improve kill's description #7007

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`kill`: improve kill's description
en-jin19 Aug 27, 2021
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en-jin19 Sep 1, 2021
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Update sql-statement-kill.md
hawkingrei Sep 2, 2021
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Update sql-statements/sql-statement-kill.md
TomShawn Sep 2, 2021
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3 changes: 2 additions & 1 deletion sql-statements/sql-statement-kill.md
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Expand Up @@ -47,7 +47,8 @@ Query OK, 0 rows affected (0.00 sec)
## MySQL 兼容性

* 按照设计，`KILL TIDB` 语句默认与 MySQL 不兼容。负载均衡器后面通常放有多个 TiDB 服务器，这种默认不兼容有助于防止在错误的 TiDB 服务器上终止连接。
* `KILL TIDB` 语句是 TiDB 的扩展语法。如果正尝试终止的会话位于同一个 TiDB 服务器上，可在配置文件里设置 [`compatible-kill-query = true`](/tidb-configuration-file.md#compatible-kill-query)。
* 请**不要**在配置文件里设置 [`compatible-kill-query = true`](/tidb-configuration-file.md#compatible-kill-query)，**除非**你确定客户端要始终连接到同一个 TiDB 节点，因为当你在默认的 MySQL 客户端按下 <kbd>ctrl</kbd>+<kbd>c</kbd> 时，客户端会打开一个新连接，并在这个新连接中执行`KILL`语句。此时，如果中间有代理，新连接可能会路由到不同的 TiDB 节点中，从而导致不同的会话可能被终止。
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* `KILL TIDB` 语句是 TiDB 的扩展语法，其功能与 MySQL 命令 `KILL [CONNECTION|QUERY]` 和 MySQL 命令行 <kbd>ctrl</kbd>+<kbd>c</kbd> 的功能不相同。在同一个 TiDB 节点中，使用`KILL TIDB`能够安全地终止 TiDB 中的连接。
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## 另请参阅

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