MYSQL写的一个定时执行的存储过程，仅供参考

ROP PROCEDURE
IF EXISTS `proc__gl`;

DELIMITER //
CREATE PROCEDURE `proc__gl` ()
BEGIN
DECLARE waringcount int;
DECLARE waringcountnoread int;
DECLARE noticecount int;
DECLARE noticecountnoread int;
DECLARE gs_id int;
DECLARE s int DEFAULT 0;

DECLARE ceshi int DEFAULT 0;

//声明游标
DECLARE cursor_notic CURSOR FOR
SELECT
A1.waringcount AS temp_waringcount,
A1.waringcountnoread AS temp_waringcountnoread,
A1.noticecount AS temp_noticecount,
A1.noticecountnoread AS temp_noticecountnoread,
A1.gs_id AS temp_gs_id
FROM
(
SELECT
a.gs_name,
a.gs_id,
SUM(
CASE
WHEN a.type = '预警信息' THEN
1
ELSE
0
END
) AS waringcount,
SUM(
CASE
WHEN a.type = '预警信息'
AND a.isread = 0 THEN
1
ELSE
0
END
) AS waringcountnoread,
SUM(
CASE
WHEN a.type = '公告信息' THEN
1
ELSE
0
END
) AS noticecount,
SUM(
CASE
WHEN a.type = '公告信息'
AND a.isread = 0 THEN
1
ELSE
0
END
) AS noticecountnoread
FROM
t a
GROUP BY
a.gs_id
) A1
JOIN (
SELECT
b.gsnameId
FROM
t1 b
GROUP BY
b.gsnameId
) A2 ON A1.gs_id = A2.gsnameId ;
#设置一个终止标记
DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET s = 1 ;

OPEN cursor_notic;
#获取游标当前指针的记录，读取一行数据并传给变量waringcount,等等
FETCH cursor_notic INTO waringcount,
waringcountnoread,
noticecount,
noticecountnoread,
gs_id;
#开始循环，判断是否游标已经到达了最后作为循环条件

while s <> 1 DO
SELECT zsgl.gsnameId into ceshi from zs_saas_yunyingjiankong_gl_kehuguanli zsgl WHERE zsgl.gsnameId=gs_id;
UPDATE t2 zsgl
SET zsgl.waringcount = waringcount,
zsgl.waringIsreadno = waringcountnoread,
zsgl.noticcount = noticecount,
zsgl.noticIsreadno = noticecountnoread
WHERE
zsgl.gsnameId = gs_id;

SELECT ceshi;
FETCH cursor_notic INTO waringcount,
waringcountnoread,
noticecount,
noticecountnoread,
gs_id;
END WHILE;
CLOSE cursor_notic;

END//

DELIMITER ;