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sql: document unsupported GRANT PROXY in MySQL compatibility (#23742) #23823

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sql: document unsupported GRANT PROXY in MySQL compatibility (#23742) #23823

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b40a15e
This is an automated cherry-pick of #23742
doc-claw-bot Sep 10, 2026
7d44c24
Update sql-statements/sql-statement-grant-privileges.md
qiancai Sep 10, 2026
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1 change: 1 addition & 0 deletions sql-statements/sql-statement-grant-privileges.md
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Expand Up @@ -84,6 +84,7 @@ mysql> SHOW GRANTS FOR 'newuser';

* Similar to MySQL, the `USAGE` privilege denotes the ability to log into a TiDB server.
* Column level privileges are not currently supported.
* Unlike MySQL, TiDB does not support `GRANT PROXY`.
* Similar to MySQL, when the `NO_AUTO_CREATE_USER` sql mode is not present, the `GRANT` statement will automatically create a new user with an empty password when a user does not exist. Removing this sql-mode (it is enabled by default) presents a security risk.
* In TiDB, after the `GRANT <privileges>` statement is executed successfully, the execution result takes effect immediately on the current connection. Whereas [in MySQL, for some privileges, the execution results take effect only on subsequent connections](https://dev.mysql.com/doc/refman/8.0/en/privilege-changes.html). See [TiDB #39356](https://github.com/pingcap/tidb/issues/39356) for details.

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