salix/db/routines/account/functions/myUser_getId.sql

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MySQL
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DELIMITER $$
CREATE OR REPLACE DEFINER=`root`@`localhost` FUNCTION `account`.`myUser_getId`()
RETURNS int(11)
DETERMINISTIC
READS SQL DATA
BEGIN
/**
* Returns the current user id.
*
* @return The user id
*/
DECLARE vUser INT DEFAULT NULL;
IF myUser_checkLogin()
THEN
SET vUser = @userId;
ELSE
SELECT id INTO vUser FROM user
WHERE name = LEFT(USER(), INSTR(USER(), '@') - 1);
END IF;
RETURN vUser;
END$$
DELIMITER ;