MySQL 有输入输出参数的存储过程实例

DELIMITER // 
DROP PROCEDURE IF EXISTS `test`.`p_getvalue` // 

CREATE 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 ; 

CALL p_getvalue(‘11000112‘,@S)