创建sql server的存储过程 sql server 2008创建存储过程

--有输入参数的存储过程--
create proc GetComment
(@commentid int)
as
select * from Comment where CommentID=@commentid
 
调用方式：exec GetComment 3
  
--有输入与输出参数的存储过程--
create proc GetCommentCount
@newsid int,
@count int output
as
select @count=count(*) from Comment where NewsID=@newsid
 
调用方式：
declare @cnt int
exec GetCommentCount 1,@cnt  output
print @cnt
 
--返回单个值的函数--
create function MyFunction
(@newsid int)
returns int
as
begin
declare @count int
select @count=count(*) from Comment where NewsID=@newsid
return @count
end
 
调用方式：
declare @cnt int
exec @cnt = MyFunction 1
print @cnt
 
--返回值为表的函数--
Create function GetFunctionTable
(@newsid int)
returns table
as
return
(select * from Comment where NewsID=@newsid)
go
  
调用方式：
select *from GetFunctionTable(2)
 

CREATE proc func_withconditions
(
 @firstName varchar(20),
 @lastName varchar(20)
)
AS
begin
    declare @sql varchar(500)
    set @sql = 'select * from employee where 1=1  '
    if(@firstName is not null)
          set @sql = @sql+' and first_name='+''''+@firstName+''''
    if(@lastName <> ' ' and @lastName is not null)
          set @sql = @sql+' and last_name='+''''+@lastName+''''
    exec(@sql)
end
GO
 
调用方式：
exec func_withconditions 'ahg',''
exec func_withconditions 'ahg',NULL
exec func_withconditions NULL,'jhg'