mysql的第一个存储过程_MySQL

DELIMITER //  
DROP PROCEDURE IF EXISTS procedure_ngg_pic_meta//  
CREATE PROCEDURE procedure_ngg_pic_meta()  
BEGIN  
     declare filename varchar(250) default '' ;  /*文件名*/
     declare style_type varchar(250) default '' ;/*风格*/
     declare brand varchar(100) default '' ;  /*品牌*/
     declare review mediumtext default '' ;/*编辑评论*/
     declare pid bigint(19) DEFAULT '0' ;/*定义pid*/
     DECLARE rs CURSOR FOR select a.filename from tb_pictures a;/*申明游标*/
     declare CONTINUE HANDLER FOR SQLSTATE '02000' SET filename = null; /*当文件名为null时跳出循环*/
     OPEN rs;/*打开游标*/
     FETCH rs INTO filename;  /*取得文件名*/
     WHILE ( filename is not null) DO  
           /*开始遍历*/
           /*主代码开始*/
           select a.pid into pid from wp_ngg_pictures a where a.filename=filename;/*找到pid*/
           select b.style_type,b.brand,b.review into style_type,brand,review from tb_pictures b where b.filename=filename;
           insert into wp_nggcf_field_values (pid,fid,field_value,ngg_type,dateadded)
           values( pid,6,style_type,1,now());
        insert into wp_nggcf_field_values(pid,fid,field_value,ngg_type,dateadded)
        values(pid,5,brand,1,now());
        insert into wp_nggcf_field_values(pid,fid,field_value,ngg_type,dateadded)
        values(pid,7,review,1,now());
           /*主代码结束*/
           FETCH rs INTO filename ;
        END WHILE; /*  遍历结束*/
     CLOSE rs;/*关闭游标 */
END //  
DELIMITER ;