问题
i have to select all users with any privileges to database (e.g. database 'mysql'). Any suggestions? Thanks.
回答1:
Look the in mysql
database (an actual db named mysql
inside the mysql server, just to be clear). There's three tables (db
, tables_priv
, and columns_priv
) where the db/table/column privs are stored:
SELECT 'db', User, Host
FROM db
WHERE Db='mydatabase'
UNION
SELECT 'table', User, Host
FROM tables_priv
WHERE Db='mydatabase'
UNION
SELECT 'col', User, Host
FROM columns_priv
WHERE Db='mydatabase'
should show you what you need.
回答2:
A good view of all users and their approximate privileges. If there is a password, it will by an encrytped string; if not, this field is blank. Select is a very general privlege; insert allows table manipulation within a database; shutdown allows major system changes, and should only be usable by root; the ability to grant permissions is separate from the others.
SELECT user, host, password, select_priv, insert_priv, shutdown_priv, grant_priv
FROM mysql.user
View permissions for individual databases.
SELECT user, host, db, select_priv, insert_priv, grant_priv FROM mysql.db
回答3:
database privileges are stored in
mysql.db
table privileges are stored in
mysql.tables_priv
column privileges are stored in
mysql.columns_priv
routine privileges are stored in
mysql.proc_privs
You can define a store procedure to list the privileges:
delimiter //
CREATE PROCEDURE list_privileges (IN db_name CHAR(50))
BEGIN
SELECT concat(Db,'.', '*') as 'what', User, Host, '...' as 'perms'
FROM mysql.db
WHERE Db=db_name
UNION
SELECT concat(Db,'.', Table_name), User, Host, table_priv
FROM mysql.tables_priv
WHERE Db=db_name and table_priv != ''
UNION
SELECT concat(Db,'.', Table_name, '(', Column_name,')'), User, Host, Column_priv
FROM mysql.columns_priv
WHERE Db=db_name
UNION
SELECT concat(Db,'.', Routine_name, '()'), User, Host, Proc_priv
FROM mysql.procs_priv
WHERE Db=db_name;
END//
delimiter ;
example:
mysql> call list_privileges("testlink2");
+-----------------------------+-----------+-----------+---------+
| what | User | Host | perms |
+-----------------------------+-----------+-----------+---------+
| testlink2.* | testlink2 | % | ... |
| testlink2.* | testlink2 | localhost | ... |
| testlink2.executions | testlink2 | % | Select |
| testlink2.users(id) | testlink2 | % | Select |
| testlink2.list_privileges() | testlink2 | % | Execute |
+-----------------------------+-----------+-----------+---------+
5 rows in set (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
来源:https://stackoverflow.com/questions/7520036/show-users-with-any-privileges-to-database-mysql