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Mysql带返回值与不带返回值的2种存储过程写法
过程1:带返回值:drop procedure if exists proc_addNum;create procedure proc_addNum (in x int,in y int,out sum int)BEGINSET sum=
过程1:带返回值:drop procedure if exists proc_addNum;create procedure proc_addNum (in x int,in y int,out sum int)BEGINSET sum=