Question

我正在使用SQL Server 2008.我的程序是

SELECT ContractorID ,
       Name,
       ROW_NUMBER() OVER (ORDER BY ContractorID) as RowNumber
FROM dbo.Contractor

这是有效的，但现在我想将参数传递给OVER函数。

我试过了：

DECLARE @OrderBy VARCHAR(MAX)
SET @OrderBy = 'ORDER BY ContractorID'

SELECT ContractorID ,
       Name,
       ROW_NUMBER() OVER (@OrderBy) as RowNumber
FROM dbo.Contractor

这会导致错误'@OrderBy附近的语法不正确'？我怎样才能做到这一点？感谢。

Answer 1

您可能拥有动态SQL，然后执行它

DECLARE @OrderBy VARCHAR(MAX)
SET @OrderBy = 'ORDER BY ContractorID'
DECLARE @SQL VARCHAR(MAX)
SET @SQL = 
'SELECT ContractorID ,
       Name,
       ROW_NUMBER() OVER (' + @OrderBy + ') as RowNumber
FROM dbo.Contractor '

EXEC (@SQL)

Answer 2

试试这个 -

DECLARE @OrderBy VARCHAR(MAX)
SET @OrderBy = 'ORDER BY ContractorID'

DECLARE @SQL NVARCHAR(MAX)
SELECT @SQL = 'SELECT ContractorID ,
       Name,
       ROW_NUMBER() OVER (' + @OrderBy + ') as RowNumber
FROM dbo.Contractor'

PRINT @SQL
EXEC sys.sp_executesql @SQL

Answer 3

为什么不尝试这个..

DECLARE @OrderBy VARCHAR(MAX)
SET @OrderBy = 'ContractorID'

SELECT ContractorID ,
       Name,
       ROW_NUMBER() OVER (order by @OrderBy) as RowNumber
FROM dbo.Contractor

希望这会有所帮助..

带参数的ROW_NUMBER

3 个答案: