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sql: improve kill's description #6233

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sql: improve kill's description
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mysql_test: support alter table TABLE_NAME engine=xxxx
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sql: improve kill's description 
Signed-off-by: Weizhen Wang <wangweizhen@pingcap.com>
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@hawkingrei @TomShawn
hawkingrei authored and TomShawn committed Aug 24, 2021
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5 changes: 3 additions & 2 deletions sql-statements/sql-statement-kill.md
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Expand Up @@ -34,8 +34,9 @@ Query OK, 0 rows affected (0.00 sec)

## MySQL compatibility

* By design, this statement is not compatible with MySQL by default. This helps prevent against a case of a connection being terminated on the wrong TiDB server, because it is common to place multiple TiDB servers behind a load balancer.
* The `KILL TIDB` statement is a TiDB extension. If you are certain that the session you are attempting to kill is on the same TiDB server, set [`compatible-kill-query = true`](/tidb-configuration-file.md#compatible-kill-query) in your configuration file.
* By design, `KILL` is not compatible with MySQL by default. This helps prevent against a case of a connection being terminated on the wrong TiDB server, because it is common to place multiple TiDB servers behind a load balancer.
* You can use `KILL` statment If you are certain that the session you are attempting to kill is on the same TiDB server and set [`compatible-kill-query = true`](/tidb-configuration-file.md#compatible-kill-query) in your configuration file.
* The `KILL TIDB` statement is a TiDB extension. You can kill the session without limitation.
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## See also

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