MySQL多个条件判断是怎样的呢?下面就为您举例说明MySQL多个条件判断,希望对您学习MySQL多个条件判断方面能够有所启迪 。
- use industry_finance;
- DELIMITER //
- drop procedure if exists updateCursor //
- CREATE PROCEDURE updateCursor()
- BEGIN
- declare id varchar(20);
- declare month varchar(20);
- declare season varchar(20);
- declare cur1 CURSOR FOR SELECT ID_,month_ FROM t_industry_finance_instance;
- OPEN cur1;
- FETCH cur1 INTO id,month;
- WHILE (id is not null ) DO
- if(month=01||month=02||month=03) THEN set season=1;
- end if;
- if(month=04||month=05||month=06) THEN set season=2;
- end if;
- if(month=07||month=08||month=09) THEN set season=3;
- end if;
- if(month=10||month=11||month=12) THEN set season=4;
- end if;
- update t_industry_finance_instance set seasonseason_=season where ID_=id;
- FETCH cur1 INTO id,month;
- END WHILE;
- CLOSE cur1;
- END;//
- DELIMITER ;
- call updateCursor();