Question

我希望从Exec(@sql)获取值并分配给@Rowcount(int)

这是我的问题：

'SET @RowCount = (select count(*) 
                    FROM dbo.Comm_Services 
                   WHERE CompanyId = '+cast(@CompanyId as char)+' and '+@condition+')'

Answer 1

一方面，您可以使用sp_executesql：

exec sp_executesql N'select @rowcount=count(*) from anytable', 
                    N'@rowcount int output', @rowcount output;

另一方面，您可以使用临时表：

declare @result table (rowcount int);
insert into @result (rowcount)
exec (N'select count(*) from anytable');
declare @rowcount int = (select top (1) rowcount from @result);

Answer 2

这是我的程序

CREATE PROC sp_count
    @CompanyId sysname,
    @codition sysname
    AS
    SET NOCOUNT ON
    CREATE TABLE #ctr
    ( NumRows int )

    DECLARE @intCount int
         , @vcSQL varchar(255)

    SELECT    @vcSQL = ' INSERT #ctr FROM dbo.Comm_Services 
                       WHERE CompanyId = '+@CompanyId+' and '+@condition+')'
    EXEC      (@vcSQL)

    IF @@ERROR = 0
    BEGIN
         SELECT    @intCount = NumRows
         FROM #ctr

         DROP TABLE #ctr
         RETURN @intCount
    END
    ELSE
    BEGIN
         DROP TABLE #ctr
         RETURN -1
    END
    GO

Answer 3

今天正在玩这个...我相信你也可以使用@@ ROWCOUNT，就像这样：

DECLARE @SQL VARCHAR(50)
DECLARE @Rowcount INT
SET @SQL = 'SELECT 1 UNION SELECT 2'
EXEC(@SQL)
SET @Rowcount = @@ROWCOUNT
SELECT @Rowcount

然后将“SELECT 1 UNION SELECT 2”替换为您没有计数的实际选择。我建议你在选择中加1，就像这样：

SELECT 1
FROM dbo.Comm_Services
WHERE....
....

（与放置SELECT *相反）

希望有所帮助。

Answer 4

声明@nReturn int = 0 EXEC @nReturn =存储过程

Answer 5

如果我理解正确，（我可能不会）

'SELECT @RowCount = COUNT(*)
                   FROM dbo.Comm_Services
                   WHERE CompanyId = ' + CAST(@CompanyId AS CHAR) + '
                   AND ' + @condition

从exec返回值（@sql）

5 个答案: