How to increment in a select query

Assuming a table:

CREATE TABLE [SomeTable] (
  [id] INTEGER,
  [order] INTEGER,
  PRIMARY KEY ([id], [order])
);

One way to get this in Microsoft SQL Server 2000 is to use a subquery to count the rows with the same id and a lower ordering.

SELECT *, (SELECT COUNT(*) FROM [SomeTable] counter 
           WHERE t.id = counter.id AND t.order < counter.order) AS row_num
FROM [SomeTable] t

Tip: It's 2010. Soon your SQL Server will be old enough to drive.

If you use SQL Server 2005 or later, you get wonderful new functions like ROW_NUMBER() OVER (PARTITION...).

Yes you want ROW_NUMBER().

I would try:

SELECT id, ROW_NUMBER() OVER (PARTITION BY ID ORDER BY ID) AS Counter

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