proc getparent
(
@userid int
)
as
declare @parentid int
select @parentid = parentid from user where userid=@userid
if(@parentid =0)
exec getparent @userid+1
go
这样好像不行的?必须拆成2个么?
(
@userid int
)
as
declare @parentid int
select @parentid = parentid from user where userid=@userid
if(@parentid =0)
exec getparent @userid+1
go
这样好像不行的?必须拆成2个么?
(
@userid int
)
as
declare @parentid int
flag:
select @parentid = parentid from [user] where userid=@userid
if(@parentid =0)
begin
set @userid=@userid+1
goto flag
end
go你的需求貌似这样就可以
(
@userid int
)
as
declare @parentid int
select @parentid = parentid from [user] where userid=@userid
if(@parentid =0)
begin
set @userid=@userid+1
exec getparent @userid
end
go或改为这样,未测
GO
IF OBJECT_ID ( 'Production.usp_GetList', 'P' ) IS NOT NULL
DROP PROCEDURE Production.usp_GetList;
GO
CREATE PROCEDURE Production.usp_GetList @product varchar(40)
, @maxprice money
, @compareprice money OUTPUT
, @listprice money OUT
AS
SELECT p.name AS Product, p.ListPrice AS 'List Price'
FROM Production.Product p
JOIN Production.ProductSubcategory s
ON p.ProductSubcategoryID = s.ProductSubcategoryID
WHERE s.name LIKE @product AND p.ListPrice < @maxprice;
-- Populate the output variable @listprice.
SET @listprice = (SELECT MAX(p.ListPrice)
FROM Production.Product p
JOIN Production.ProductSubcategory s
ON p.ProductSubcategoryID = s.ProductSubcategoryID
WHERE s.name LIKE @product AND p.ListPrice < @maxprice);
-- Populate the output variable @compareprice.
SET @compareprice = @maxprice;
GO
另一个存储过程调用的时候:Create Proc Test
as
DECLARE @compareprice money, @cost money
EXECUTE Production.usp_GetList '%Bikes%', 700,
@compareprice OUT,
@cost OUTPUT
IF @cost <= @compareprice
BEGIN
PRINT 'These products can be purchased for less than
$'+RTRIM(CAST(@compareprice AS varchar(20)))+'.'
END
ELSE
PRINT 'The prices for all products in this category exceed
$'+ RTRIM(CAST(@compareprice AS varchar(20)))+'.'
第二种方法:创建一个临时表create proc GetUserName
as
begin
select 'UserName'
endCreate table #tempTable (userName nvarchar(50))
insert into #tempTable(userName)
exec GetUserNameselect #tempTable--用完之后要把临时表清空
drop table #tempTable--需要注意的是,这种方法不能嵌套。例如: procedure a
begin
...
insert #table exec b
end
procedure b
begin
...
insert #table exec c
select * from #table
end
procedure c
begin
...
select * from sometable
end --这里a调b的结果集,而b中也有这样的应用b调了c的结果集,这是不允许的,
--会报“INSERT EXEC 语句不能嵌套”错误。在实际应用中要避免这类应用的发生。
第三种方法:声明一个变量,用exec(@sql)执行:1);EXEC 执行SQL语句declare @rsql varchar(250)
declare @csql varchar(300)
declare @rc nvarchar(500)
declare @cstucount int
declare @ccount int
set @rsql='(select Classroom_id from EA_RoomTime where zc='+@zc+' and xq='+@xq+' and T'+@time+'=''否'') and ClassroomType=''1'''
--exec(@rsql)
set @csql='select @a=sum(teststucount),@b=sum(classcount) from EA_ClassRoom where classroom_id in '
set @rc=@csql+@rsql
exec sp_executesql @rc,N'@a int output,@b int output',@cstucount output,@ccount output--将exec的结果放入变量中的做法
--select @csql+@rsql
--select @cstucount本文来自CSDN博客,转载请标明出处:http://blog.csdn.net/fredrickhu/archive/2009/09/23/4584118.aspx
(
@userid int,
@parentid int out
)
as
flag:
select @parentid = parentid from [user] where userid=@userid
if(@parentid =0)
begin
set @userid=@userid+1
goto flag
end
go不过那个过程似乎没有意义,至少得得到一个返回值吧
--例如,factorial(10)即等于10 * 9 * 8 * 7 * 6 * 5 * 4 * 3 * 2
-- 以下代码即实现了阶乘:
create proc spJieCheng
@number int,
@retval int output
as
begin
declare @in int,@out int
if(@number<>1)
begin
set @in=@number-1
exec spJieCheng @in ,@out output
set @retval=@number*@out
end
else
begin
set @retval=1
end
return
end
declare @n intexec spJieCheng 10,@N output
select @n
/*
-----------
3628800*/
while @parentid=0
begin
select @parentid = parentid from [user] where userid=@userid
set @userid=@userid+1
end
(
@userid int
)
as
declare @parentid int
select @parentid = parentid from user where userid=@userid
if(@parentid =0)
begin
set @userid=@userid+1
exec getparent @useridgo
end 最大好像32层