create procedure pro_select
@name varchar(40)
@number varchar(40) output
as
select number = @number from table1 where [name] = @name
go 我想返回这个number这个值.这个存储过程应该怎样写?写好了存储过程应该怎样调用??指教一下.谢谢各位高手!
@name varchar(40)
@number varchar(40) output
as
select number = @number from table1 where [name] = @name
go 我想返回这个number这个值.这个存储过程应该怎样写?写好了存储过程应该怎样调用??指教一下.谢谢各位高手!
exec pro_select 'xxx',@num output
select @num
OUTPUT 参数允许外部过程、批处理或多条 Transact-SQL 语句访问在过程执行期间设置的某个值。下面的示例创建一个存储过程 (titles_sum),并使用一个可选的输入参数和一个输出参数。首先,创建过程:USE pubs
GO
IF EXISTS(SELECT name FROM sysobjects
WHERE name = 'titles_sum' AND type = 'P')
DROP PROCEDURE titles_sum
GO
USE pubs
GO
CREATE PROCEDURE titles_sum @@TITLE varchar(40) = '%', @@SUM money OUTPUT
AS
SELECT 'Title Name' = title
FROM titles
WHERE title LIKE @@TITLE
SELECT @@SUM = SUM(price)
FROM titles
WHERE title LIKE @@TITLE
GO接下来,将该 OUTPUT 参数用于控制流语言。 说明 OUTPUT 变量必须在创建表和使用该变量时都进行定义。
参数名和变量名不一定要匹配,不过数据类型和参数位置必须匹配(除非使用 @@SUM = variable 形式)。 DECLARE @@TOTALCOST money
EXECUTE titles_sum 'The%', @@TOTALCOST OUTPUT
IF @@TOTALCOST < 200
BEGIN
PRINT ' '
PRINT 'All of these titles can be purchased for less than $200.'
END
ELSE
SELECT 'The total cost of these titles is $'
+ RTRIM(CAST(@@TOTALCOST AS varchar(20)))下面是结果集:Title Name
------------------------------------------------------------------------
The Busy Executive's Database Guide
The Gourmet Microwave
The Psychology of Computer Cooking(3 row(s) affected)Warning, null value eliminated from aggregate.
All of these titles can be purchased for less than $200.
@name varchar(40) ,
@number varchar(40) output
as
select @number = number from table1 where [name] = @name
go
create procedure pro_select
@name varchar(40),
@number varchar(40) output
as
select @number=number from table1 where [name] = @name
go