如何编写存储过程以检查MySql中的Grant？

Question

I want to create a stored procedure to check grant. I have tried by following way but I don't what I am missing here.

//simple Query "SHOW GRANTS FOR testuser @'192.168.1.180'"  - It is working

CREATE DEFINER=`abc`@`localhost` PROCEDURE `SP_GetGrantAllPriviledge`(
IN Username TEXT,
IN Hostname TEXT
)
BEGIN
   SHOW GRANTS FOR Username @Hostname; //doesn't work
END

Can anybody suggest what I am missing?

Answer 1

You can use the TABLE_PRIVILEGES in the INFORMATION_SCHEMA.

SELECT *
FROM INFORMATION_SCHEMA.TABLE_PRIVILEGES
WHERE `GRANTEE` = CONCAT('''', Username, '''@''', Hostname, '''')

Answer 2

@Hostname; is the source of issue

Update your SP with prepare statement:

CREATE PROCEDURE `SP_GetGrantAllPriviledge`(
IN Username TEXT,
IN Hostname TEXT
)
BEGIN

   SET @sql = CONCAT('SHOW GRANTS FOR ',Username,' @',Hostname,'; ');
        PREPARE stmt FROM @sql;
        EXECUTE stmt;
END