存储过程参数再赋值的问题

[lixxx]

int a;//大哥们怎么将如下的@cnt再赋值给全局变量a呢？

CREATE Procedure get_number 
    @table nvarchar(50),
    @cnt int output
AS
   declare @sql nvarchar(100)
   set @sql=N'select @cnt=count(*) from '+@table
   exec sp_executesql @sql ,N'@cnt int output' , @cnt output

GO

declare @cnt int
exec get_number  'syscolumns' ,@cnt output
print @cnt

GO
drop proc get_number

[zblaoshu1979]

a=get_number不就行了吗

[百年树人]

在哪里赋值？

[东那个升]

直接

set @a=@cnt

[永生天地]

int a;//在哪里

[SQL77]

CREATE Procedure get_number
@table nvarchar(50),
@cnt int output
AS
declare @sql nvarchar(100)
set @sql=N'select @cnt=count(*) from '+@table
exec sp_executesql @sql ,N'@cnt int output' , @cnt output

GO

declare @cnt int
exec get_number 'syscolumns' ,@cnt output
print @cnt

GO
drop proc get_number


楼主在C#前台程序可以获取输出参数

[bancxc]

CREATE Procedure get_number 
    @table nvarchar(50),
    @cnt int output
AS
   declare @sql nvarchar(100)
   set @sql=N'select @cnt=count(*) from '+@table
   exec sp_executesql @sql ,N'@cnt int output' , @cnt output

GO

declare @cnt int
declare @a int
exec get_number  'syscolumns' ,@cnt output
select @a= @cnt

GO
drop proc get_number


--
11373
可以啊

[SQL77]

http://topic.csdn.net/t/20060609/11/4811267.html

参考

[lixxx]

如下。set @a=@cnt貌似不行啊。在存储过程里面能赋值吗，要不只能是局部变量了。

int a;
CREATE Procedure get_number 
    @table nvarchar(50),
    @cnt int output
AS
   declare @sql nvarchar(100)
   set @sql=N'select @cnt=count(*) from '+@table
   exec sp_executesql @sql ,N'@cnt int output' , @cnt output

GO

declare @cnt int
exec get_number  'syscolumns' ,@cnt output
print @cnt

GO
drop proc get_number

[lixxx]

没有用C#啊。。。用的是vc
[Quote=引用 5 楼 sql77 的回复:]
CREATE Procedure get_number
@table nvarchar(50),
@cnt int output
AS
declare @sql nvarchar(100)
set @sql=N'select @cnt=count(*) from '+@table
exec sp_executesql @sql ,N'@cnt int output' , @cnt ou……
[/Quote]

[--小F--]

存储过程调用存储过程??
第一种方法: 使用output参数

USE AdventureWorks;
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'
end

Create table #tempTable (userName nvarchar(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 @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

[东那个升]

[Quote=引用 8 楼 lixxx 的回复:]
如下。set @a=@cnt貌似不行啊。在存储过程里面能赋值吗，要不只能是局部变量了。

SQL code

int a;
CREATE Procedure get_number
@table nvarchar(50),
@cnt int output
AS
declare @sql nvarchar(100)
set @sql=N'select ……
[/Quote]

不就是查询行数需要怎么搞吗。

[SQL77]

[Quote=引用 9 楼 lixxx 的回复:]
没有用C#啊。。。用的是vc

引用 5 楼 sql77 的回复:
CREATE Procedure get_number
@table nvarchar(50),
@cnt int output
AS
declare @sql nvarchar(100)
set @sql=N'select @cnt=count(*) from '+@table
exec sp_executes……
[/Quote]
那楼主参考VC调用存储过程呀,晕

[lixxx]

EXEC SQL CREATE   Procedure   table_name   
      @tablename   char(10),@ID int
As  exec('insert into ' +@tablename+ ' values(' +@ID+ ',1,1,1,1,1,1,1,1,1,1)'); //表名变量

EXEC SQL CREATE Procedure ge_number 
    @table nvarchar(50),
    @cnt int output
AS
   declare @sql nvarchar(100)
   set @sql=N'select @cnt=number into :MNumber from '+@table
   exec sp_executesql @sql ,N'@cnt int output' , @cnt output;  
EXEC SQL insert into N2 values(14,1,1,1,1,1,1,1,1,1,1);
EXEC SQL EXEC table_name :table,:MNumber;//能否实现table，MNumber分别可变呢

[Quote=引用 12 楼 sql77 的回复:]
引用 9 楼 lixxx 的回复:
没有用C#啊。。。用的是vc

引用 5 楼 sql77 的回复:
CREATE Procedure get_number
@table nvarchar(50),
@cnt int output
AS
declare @sql nvarchar(100)
set @sql=N'select @cnt=count(*) from '+@tabl……
[/Quote]