REVOKE    priv_type [(column_list)]      [, priv_type [(column_list)]] ...    ON [object_type] priv_level    FROM user [, user] ...REVOKE ALL PRIVILEGES, GRANT OPTION    FROM user [, user] ...REVOKE PROXY ON user    FROM user [, user] ...

The REVOKE statement enables system administrators to revoke privileges from MySQL accounts. Each account name uses the format described in Section 6.2.3, "Specifying Account Names". For example:

REVOKE INSERT ON *.* FROM 'jeffrey'@'localhost';

If you specify only the user name part of the account name, a host name part of '%' is used.

For details on the levels at which privileges exist, the permissible priv_type and priv_level values, and the syntax for specifying users and passwords, see Section 13.7.1.4, "GRANT Syntax"

To use the first REVOKE syntax, you must have the GRANT OPTION privilege, and you must have the privileges that you are revoking.

To revoke all privileges, use the second syntax, which drops all global, database, table, column, and routine privileges for the named user or users:

REVOKE ALL PRIVILEGES, GRANT OPTION FROM user [, user] ...

To use this REVOKE syntax, you must have the global CREATE USER privilege or the UPDATE privilege for the mysql database.

REVOKE removes privileges, but does not drop mysql.user table entries. To remove a user account entirely, use DROP USER (see Section 13.7.1.3, "DROP USER Syntax") or DELETE.

If the grant tables hold privilege rows that contain mixed-case database or table names and the lower_case_table_names system variable is set to a nonzero value, REVOKE cannot be used to revoke these privileges. It will be necessary to manipulate the grant tables directly. (GRANT will not create such rows when lower_case_table_names is set, but such rows might have been created prior to setting the variable.)

When successfully executed from the mysql program, REVOKE responds with Query OK, 0 rows affected. To determine what privileges result from the operation, use SHOW GRANTS. See Section 13.7.5.22, "SHOW GRANTS Syntax".