如下例:
declare @name varchar(30), @wage money
select @name=e_name,@wage=e_wage
from employee
where emp_id='10010001'
赋予的值应通过WHERE筛选成唯一值
如下例:
declare @name varchar(30), @wage money
select @name=e_name,@wage=e_wage
from employee
where emp_id='10010001'
赋予的值应通过WHERE筛选成唯一值