Pure-SQL Technique for Auto-Numbering Rows in Result Set

Question

I\'m looking for a way to sequentially number rows in a result set (not a table). In essence, I\'m starting with a query like the following:

SELECT         


        

Answer 1

There is no ANSI-standard way to do this of which I am aware.

In SQL Server you have a ROW_NUMBER() function which can be used and in Oracle, there is a ROWNUM pseudo column.

In MySQL, there is this technique