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();