SQL存储过程之间的调用

第一种方法: 使用output参数

USE AdventureWorks;

GO

IF OBJECT_ID ( 'https://www.360docs.net/doc/ea3015415.html,p_GetList', 'P' ) IS NOT NULL DROP PROCEDURE https://www.360docs.net/doc/ea3015415.html,p_GetList;

GO

CREATE PROCEDURE https://www.360docs.net/doc/ea3015415.html,p_GetList @product varchar(40) , @maxprice money

, @compareprice money OUTPUT

, @listprice money OUT

AS

SELECT https://www.360docs.net/doc/ea3015415.html, AS Product, p.ListPrice AS 'List Price'

FROM Production.Product p

JOIN Production.ProductSubcategory s

ON p.ProductSubcategoryID = s.ProductSubcategoryID

WHERE https://www.360docs.net/doc/ea3015415.html, 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 https://www.360docs.net/doc/ea3015415.html, 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 https://www.360docs.net/doc/ea3015415.html,p_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

createprocGetUserName

as

begin

select 'UserName'

end

Create table #tempTable (userNamenvarchar(50))

insert into #tempTable(userName)

exec GetUserName

select #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 @rsqlvarchar(250)

declare @csqlvarchar(300)

declare @rcnvarchar(500)

declare @cstucountint

declare @ccountint

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'@aintoutput,@bint output',@cstucount output,@ccount output--将exec的结果放入变量中的做法

--select @csql+@rsql

--select @cstucount