我有一个存储过程,它返回80列和300行。我要写一个select函数,它能得到2个这样的列。类似的

SELECT col1, col2 FROM EXEC MyStoredProc 'param1', 'param2'

当我使用上面的语法时,我得到了错误:

“无效的列名”。

我知道最简单的解决方案是更改存储过程,但我没有编写它,也不能更改它。

有什么办法能让我如愿以偿吗?

I could make a temp table to put the results in, but because there are 80 columns so I would need to make an 80 column temp table just to get 2 columns. I wanted to avoid tracking down all the columns that are returned. I tried using WITH SprocResults AS .... as suggested by Mark, but I got 2 errors Incorrect syntax near the keyword 'EXEC'.Incorrect syntax near ')'. I tried declaring a table variable and I got the following error Insert Error: Column name or number of supplied values does not match table definition If I try SELECT * FROM EXEC MyStoredProc 'param1', 'param2' I get the error : Incorrect syntax near the keyword 'exec'.


当前回答

知道这为什么如此困难也许会有所帮助。 存储过程可以只返回文本(print 'text'),也可以返回多个表,或者根本不返回表。

所以像SELECT * FROM (exec sp_tables) Table1这样的东西将不起作用

其他回答

如果您这样做是为了手动验证数据,您可以使用LINQPad。

在LinqPad中创建一个到数据库的连接,然后创建类似于下面的c#语句:

DataTable table = MyStoredProc (param1, param2).Tables[0];
(from row in table.AsEnumerable()
 select new
 {
  Col1 = row.Field<string>("col1"),
  Col2 = row.Field<string>("col2"),
 }).Dump();

参考http://www.global-webnet.net/blogengine/post/2008/09/10/LINQPAD-Using-Stored-Procedures-Accessing-a-DataSet.aspx

如果你能够修改你的存储过程,你可以很容易地把所需的列定义作为一个参数,并使用一个自动创建的临时表:

CREATE PROCEDURE sp_GetDiffDataExample
      @columnsStatement NVARCHAR(MAX) -- required columns statement (e.g. "field1, field2")
AS
BEGIN
    DECLARE @query NVARCHAR(MAX)
    SET @query = N'SELECT ' + @columnsStatement + N' INTO ##TempTable FROM dbo.TestTable'
    EXEC sp_executeSql @query
    SELECT * FROM ##TempTable
    DROP TABLE ##TempTable
END

在这种情况下,您不需要手动创建临时表—它是自动创建的。希望这能有所帮助。

一个快速的方法是添加一个新参数“@Column_Name”,并让调用函数定义要检索的列名。在你的sproc的返回部分,你会有if/else语句并只返回指定的列,或者如果为空-返回所有。

CREATE PROCEDURE [dbo].[MySproc]
        @Column_Name AS VARCHAR(50)
AS
BEGIN
    IF (@Column_Name = 'ColumnName1')
        BEGIN
            SELECT @ColumnItem1 as 'ColumnName1'
        END
    ELSE
        BEGIN
            SELECT @ColumnItem1 as 'ColumnName1', @ColumnItem2 as 'ColumnName2', @ColumnItem3 as 'ColumnName3'
        END
END

我知道从sp执行和插入到临时表或表变量将是一个选项,但我不认为这是你的要求。根据您的要求,以下查询语句应该工作:

Declare @sql nvarchar(max)
Set @sql='SELECT   col1, col2 FROM OPENROWSET(''SQLNCLI'', ''Server=(local);uid=test;pwd=test'',
     ''EXEC MyStoredProc ''''param1'''', ''''param2'''''')'
 Exec(@sql)

如果你有可信连接,那么使用下面的查询语句:

Declare @sql nvarchar(max)
Set @sql='SELECT   col1, col2 FROM OPENROWSET(''SQLNCLI'', ''Server=(local);Trusted_Connection=yes;'',
     ''EXEC MyStoredProc ''''param1'''', ''''param2'''''')'
 Exec(@sql)

如果运行上面的语句出错,那么只需运行下面的语句:

sp_configure 'Show Advanced Options', 1
GO
RECONFIGURE
GO
sp_configure 'Ad Hoc Distributed Queries', 1
GO
RECONFIGURE
GO

我希望这将帮助那些将面临类似问题的人。如果有人想尝试temp表或表变量,应该如下所示,但在这种情况下,你应该知道sp返回多少列,然后你应该在temp表或表变量中创建这么多列:

--for table variable 
Declare @t table(col1 col1Type, col2 col2Type)
insert into @t exec MyStoredProc 'param1', 'param2'
SELECT col1, col2 FROM @t

--for temp table
create table #t(col1 col1Type, col2 col2Type)
insert into #t exec MyStoredProc 'param1', 'param2'
SELECT col1, col2 FROM #t

创建一个动态视图,并从中获得结果.......

CREATE PROCEDURE dbo.usp_userwise_columns_value
(
    @userid BIGINT
)
AS 
BEGIN
        DECLARE @maincmd NVARCHAR(max);
        DECLARE @columnlist NVARCHAR(max);
        DECLARE @columnname VARCHAR(150);
        DECLARE @nickname VARCHAR(50);

        SET @maincmd = '';
        SET @columnname = '';
        SET @columnlist = '';
        SET @nickname = '';

        DECLARE CUR_COLUMNLIST CURSOR FAST_FORWARD
        FOR
            SELECT columnname , nickname
            FROM dbo.v_userwise_columns 
            WHERE userid = @userid

        OPEN CUR_COLUMNLIST
        IF @@ERROR <> 0
            BEGIN
                ROLLBACK
                RETURN
            END   

        FETCH NEXT FROM CUR_COLUMNLIST
        INTO @columnname, @nickname

        WHILE @@FETCH_STATUS = 0
            BEGIN
                SET @columnlist = @columnlist + @columnname + ','

                FETCH NEXT FROM CUR_COLUMNLIST
                INTO @columnname, @nickname
            END
        CLOSE CUR_COLUMNLIST
        DEALLOCATE CUR_COLUMNLIST  

        IF NOT EXISTS (SELECT * FROM sys.views WHERE name = 'v_userwise_columns_value')
            BEGIN
                SET @maincmd = 'CREATE VIEW dbo.v_userwise_columns_value AS SELECT sjoid, CONVERT(BIGINT, ' + CONVERT(VARCHAR(10), @userid) + ') as userid , ' 
                            + CHAR(39) + @nickname + CHAR(39) + ' as nickname, ' 
                            + @columnlist + ' compcode FROM dbo.SJOTran '
            END
        ELSE
            BEGIN
                SET @maincmd = 'ALTER VIEW dbo.v_userwise_columns_value AS SELECT sjoid, CONVERT(BIGINT, ' + CONVERT(VARCHAR(10), @userid) + ') as userid , ' 
                            + CHAR(39) + @nickname + CHAR(39) + ' as nickname, ' 
                            + @columnlist + ' compcode FROM dbo.SJOTran '
            END

        --PRINT @maincmd
        EXECUTE sp_executesql @maincmd
END

-----------------------------------------------
SELECT * FROM dbo.v_userwise_columns_value