MYSQL- 存储过程示例

　　最近需要用到MYSQL，没耐心从头到尾，慢慢了解了，需要什么直接百度，直接了解，从实战中学习。

　　看一下MYSQL存储过程的示例：

CREATE PROCEDURE plogin

(

    p_username char(15),

    p_password char(32),

    p_ip char(18),

    p_logintime datetime

)

LABEL_PROC:

BEGIN    

 

    DECLARE v_uid mediumint(8);  

    DECLARE v_realpassword char(32);     

    DECLARE v_nickname varchar(30);    

    DECLARE v_oltime smallint(6);      

   

    SELECT u.uid, u.password, f.nickname, u.oltime INTO v_uid, v_realpassword, v_nickname, v_oltime

    FROM cdb_members u INNER JOIN cdb_memberfields f ON f.uid = u.uid WHERE u.username = p_username;   

   

    IF (v_uid IS NULL) THEN

        SELECT 2 AS ErrorCode;

        LEAVE LABEL_PROC;

    END IF;

 

    IF (p_password <> v_realpassword) THEN

        SELECT 3 AS ErrorCode;

        LEAVE LABEL_PROC;

    END IF;

 

    UPDATE ipsp_userexpands SET lastloginip = p_ip, lastlogintime = p_logintime WHERE uid = v_uid;

 

    SELECT 0 AS ErrorCode, v_uid AS uid, v_nickname AS nickname, v_oltime AS oltime;

 

END LABEL_PROC //

　　调用示例是 call plogin('参数1‘,'参数2','参数3','参数4');