MySQL存储过程的查询命令介绍

select name from mysql.proc where db='数据库名';

select routine_name from information_schema.routines where routine_schema='数据库名';

show procedure status where db='数据库名';
SHOW CREATE PROCEDURE 数据库.存储过程名;

CREATE DEFINER=`root`@`%` PROCEDURE `alter_view_counts`()
BEGIN
 #声明结束标识
 DECLARE end_flag int DEFAULT 0; 
 DECLARE albumId bigint; 
 #声明游标 album_curosr
 DECLARE album_curosr CURSOR FOR SELECT album_id FROM album; 
 #设置终止标志
 DECLARE CONTINUE HANDLER FOR NOT FOUND SET end_flag=1; 
 #打开游标
 OPEN album_curosr; 
 #遍历游标
 REPEAT
 #获取当前游标指针记录，取出值赋给自定义的变量
 FETCH album_curosr INTO albumId;
  #利用取到的值进行数据库的操作
  UPDATE album SET album.views_count= (SELECT SUM(light_chat.views_count) FROM `light_chat` WHERE light_chat.album_id = albumId) WHERE album.album_id = albumId;
 # 根据 end_flag 判断是否结束
 UNTIL end_flag END REPEAT; 
 #关闭游标
 close album_curosr; 
END

CALL alter_view_counts()