DELIMITER // DROP PROCEDURE IF EXISTS `test` // CREATE PROCEDURE `test` () BEGIN DECLARE no_results,le_numbers,med_numbers,fee_numbers INT DEFAULT 0; /*定义变量*/ DECLARE r_hid LONG; DECLARE cur_hid CURSOR FOR SELECT hid from hospital where `status` = 0; /*First: Delcare a cursor,首先这里对游标进行定义*/ DECLARE CONTINUE HANDLER FOR NOT FOUND SET no_results = 1; /*when "not found" occur,just continue,这个是个条件处理,针对NOT FOUND的条件*/ /* for loggging information 创建个临时表格来保持*/ /* CREATE TEMPORARY TABLE infologs ( plid INT (11) NOT NULL AUTO_INCREMENT COMMENT '主键', hid INT (11) COMMENT '医院id', level VARCHAR (20) COMMENT '会员类型名', created datetime COMMENT '创建时间', modified datetime COMMENT '修改时间', `status` TINYINT (2) COMMENT '状态 0.正常 1.删除', discount decimal(3,1) default 10.0 comment '折扣', PRIMARY KEY (`plid`) ); */ OPEN cur_hid; /*Second: Open the cursor 接着使用OPEN打开游标*/ FETCH cur_hid INTO r_hid; /*Third: now you can Fetch the row 把第一行数据写入变量中,游标也随之指向了记录的第一行*/ REPEAT SELECT count(*) INTO le_numbers FROM patient_level WHERE hid = r_hid; IF le_numbers = 0 THEN /*INSERT INTO patient_level(hid,level,discount,status,created) */ INSERT INTO patient_level(hid,level,discount,status,created) VALUES (r_hid,'普通会员',10,0,NOW()),(r_hid,'银牌会员',10,0,NOW()),(r_hid,'金牌会员',10,0,NOW()),(r_hid,'钻石会员',10,0,NOW()); END IF; SELECT count(*) INTO med_numbers FROM med_item WHERE hid = r_hid; IF med_numbers = 0 THEN INSERT INTO med_item(hid,name,duration,status,created) VALUES (r_hid,'医学验光',30,0,NOW()),(r_hid,'视功能检查',30,0,NOW()),(r_hid,'常规复查',30,0,NOW()),(r_hid,'OK镜验配',60,0,NOW()),(r_hid,'视觉训练',60,0,NOW()); END IF; SELECT count(*) INTO fee_numbers FROM fee_category WHERE hid = r_hid; IF fee_numbers = 0 THEN insert into fee_category(superior,hid,name,type,status,created) values (1,r_hid,'挂号费',1,0,now()),(1,r_hid,'检查费',1,0,now()),(1,r_hid,'手术费',1,0,now()) ,(3,r_hid,'镜片类',1,0,now()),(3,r_hid,'镜架类',1,0,now()),(3,r_hid,'隐形眼镜类',1,0,now()),(3,r_hid,'太阳镜类',1,0,now()),(3,r_hid,'配件类',1,0,now()), (2,r_hid,'中药类',1,0,now()),(2,r_hid,'西药类',1,0,now()),(2,r_hid,'器械类',1,0,now()), (4,r_hid,'塑形镜类',1,0,now()),(4,r_hid,'RGP类',1,0,now()),(4,r_hid,'离焦软镜类',1,0,now()), (5,r_hid,'到店训练类',1,0,now()),(5,r_hid,'家庭训练类',1,0,now()), (6,r_hid,'护理液类',1,0,now()),(6,r_hid,'润眼液类',1,0,now()),(6,r_hid,'清洗仪类',1,0,now()); END IF; FETCH cur_hid INTO r_hid; UNTIL no_results = 1 END REPEAT; CLOSE cur_hid; /*Finally: cursor need be closed 用完后记得用CLOSE把资源释放掉*/ /* SELECT * FROM infologs; DROP TABLE infologs; SELECT * FROM infologs1; DROP TABLE infologs1; SELECT * FROM infologs2; DROP TABLE infologs2; */ END // DELIMITER ; call `test` (); /*执行存储过程*/
这里需要注意的是DELIMITER //和DELIMITER ;两句,DELIMITER是分割符的意思,因为MySQL默认以";"为分隔符,如果我们没有声明分割符,那么编译器会把存储过程当成SQL语句进行处理,则存储过程的编译过程会报错,所以要事先用DELIMITER关键字申明当前段分隔符,这样MySQL才会将";"当做存储过程中的代码,不会执行这些代码,用完了之后要把分隔符还原。
详解请参考:https://blog.csdn.net/pang_da_xing/article/details/53836235