mysql存储过程demo

#删除存储过程
-- drop procedure if exists add_test; 
CREATE PROCEDURE add_test() 

begin
#定义变量
declare client_id int;
declare shop_id int;

#定义游标位置变量
declare local_status int; 

#创建游标
declare local_message cursor for SELECT id, f_foreign_client_id from (SELECT ts.id as id,ts.f_tel as sf_tel,tc.f_tel as cf_tel,tc.f_foreign_client_id from t_shop as ts LEFT JOIN t_contact as tc ON ts.f_tel = tc.f_tel where ts.f_foreign_client_id = 0 and ts.f_tel <> 0) as a where f_foreign_client_id <> '';

#定义游标默认值
DECLARE CONTINUE HANDLER FOR NOT FOUND SET local_status=0;
#再次设置有女表默认值
set local_status=0;

#打开游标
open local_message;
#获取总数量
set local_status=(SELECT count(*) from (SELECT ts.id as id,ts.f_tel as sf_tel,tc.f_tel as cf_tel,tc.f_foreign_client_id from t_shop as ts LEFT JOIN t_contact as tc ON ts.f_tel = tc.f_tel where ts.f_foreign_client_id = 0 and ts.f_tel <> 0) as a where f_foreign_client_id <> '');

#while循环
while local_status>0 do
#给游标赋值
fetch local_message into shop_id,client_id; #将sql查询出的值赋值给上面的变量

#判断数据是否处理完
if(local_status>0) then

#要处理的sql语句
update t_shop set f_foreign_client_id = client_id where id = shop_id;

#处理完每条数据之后，需要给游标为值减一 
set local_status=(local_status-1);
end if;
#循环结束
end while;

#结束游标
close local_message;
end

#调用存储函数add_test 
-- CALL add_test()