Eliminating ROW_NUMBER() for SQL 2000

问题

I have to migrate a sql to work on Microsoft SQL Server 2000. Unfortunately the current sql uses the function ROW_NUMBER() which is not yet supported in this version. Therefore I have to find something similar.

Below my SQL (I used * instead of listing all columns)

SELECT [Id], ROW_NUMBER() OVER (ORDER BY InstallmentNumber, ID ASC) AS ROWID
FROM [ARAS].[ARAS].[Movement]

回答1:

Using a temp table with an identity column to simulate the ROW_NUMBER may be your best bet performance wise:

CREATE TABLE #tmpRowNum (
    ROWID INT IDENTITY(1,1),
    ID INT
)

INSERT INTO #tmpRowNum
    (ID)
    SELECT ID
        FROM [ARAS].[ARAS].[Movement]
        ORDER BY InstallmentNumber, ID

回答2:

Not too sure, but here's a starting-point:

SELECT [Id],
  ( SELECT SUM(1)
    FROM [ARAS].[ARAS].[Movement]
    WHERE InstallmentNumber <= OuterMovement.InstallmentNumber
      AND ID <= OuterMovement.ID
  ) AS ‘Row Number’
FROM [ARAS].[ARAS].[Movement] AS OuterMovement

回答3:

You can make a variable table giving the "ROWID" an INT Identity value and inserting the values into that.

You can also do while w/o using the ROWID. The performance wouldn't be great though...

DECLARE @id INT, @SUM INT
SELECT @id = MIN([Id]) FROM [ARAS].[ARAS].[Movement]    


WHILE EXISTS (SELECT [Id] FROM [ARAS].[ARAS].[Movement] WHERE [Id] >= @id)
BEGIN
    ... do something with the ID ..
    SELECT @SUM = SUM(...) FROM [ARAS].[ARAS].[Movement] WHERE [Id] > @id

    SELECT @id = MIN([Id]) FROM [ARAS].[ARAS].[Movement] WHERE [Id] > @id
END

来源：https://stackoverflow.com/questions/5705855/eliminating-row-number-for-sql-2000

标签

sql

sql-server-2000

row-number