如何使用一个输入和SQL Server一个输出参数2008

Question

create procedure spGetEmployeByDepartmentIdCount 
@DepartmentIdType int , 
@DepartmentIdCount int output 
as 
Begin 
     select count(id) 
     from tblemploye1 
     where @DepartmentIdType = id  
End 

Declare @DepartmentIdCount int 
Declare @id int 
set @id = 1 
Execute spGetEmployeByDepartmentIdCount @id, @DepartmentIdCount output 
print @DepartmentIdCount 

Answer 1

你的存储过程返回仅选择数据 既然你没有指派到输出参数的任何值，它是NULL

你可以改变你的存储程序代码如下所示使用ALTER语句

select 
    @DepartmentIdCount = count(id) 
from tblemploye1 
where 
    id = @DepartmentIdType 

现在输出参数在所选部门 分配与员工的计数我希望它能帮助