1、实例 复制代码 代码如下: DELIMITER // DROP PROCEDURE IF EXISTS `test`.`p_getvalue` // CREATE DEFINER=`root`@`localhost` PROCEDURE `p_getvalue`( in id varchar(20),out s varchar(20) ) begin if (length(id)=11) then select "A_B_C_D" into s; elseif(length(id)=8) then select "A_B_C" into s; elseif(length(id)=5) then select "A_B" into s; elseif(length(id)=2) then select "A" into s; end if; select s; end // DELIMITER ;