MySQL 存储过程

DELIMITER //
DROP PROCEDURE IF EXISTS loginandreg //

CREATE PROCEDURE loginandreg(
OUT userId     BIGINT,
IN user_Pwd                          VARCHAR(32),
IN user_MobileCode                   VARCHAR(16),
IN user_RegIP                        VARCHAR(16)
)
BEGIN

DECLARE cnt  BIGINT DEFAULT 0;
DECLARE cnt2  BIGINT DEFAULT 0;
DECLARE outid BIGINT DEFAULT -1;

SELECT COUNT(*) INTO cnt FROM Users u WHERE u.user_MobileCode=user_MobileCode;

IF cnt > 0 THEN
    SELECT COUNT(*) INTO cnt2 FROM Users u WHERE u.user_MobileCode=user_MobileCode AND u.user_Pwd=user_Pwd;
    
    IF cnt2 > 0 THEN
        SELECT u.userId INTO outid FROM Users u 
        WHERE u.user_MobileCode=user_MobileCode AND u.user_Pwd=user_Pwd LIMIT 1;
    ELSE    
        SELECT -1 INTO outid;
    END IF;
    
    SELECT outid INTO userId;
ELSE 
    INSERT INTO Users(user_Pwd,user_MobileCode,user_Visibility,user_Level,user_RegTime,
                user_RegIP,user_Collecter,user_Collected)
    VALUES (user_Pwd,user_MobileCode,6,6,NOW(),user_RegIP,0,0);

    SET userId=LAST_INSERT_ID();
    SELECT userId;
END IF;

END //
DELIMITER ;