how to set row number in sybase query

Question

I have a select statemnt which will return results say 1000 using join with some 3 to 4 tables. My requirement is to have identity column in the resultset . Can anyone help

Answer 1

In sybase there isn't row_number or something like that. Maybe temporary tables with identity column will help you?

Consider below example please.

 select Rowid = identity(8), id, name      
 into #temtab
 from tab

 select Rowid, id, name
 from #temtab

Answer 2

In the version of Sybase IQ I use, version Number() or ROW_NUMBER() functions exist. In my version you may use following:

select Number() rowid, id, name      
 from tab

or

select ROW_NUMBER() OVER (PARTITION BY name ORDER BY id) rowid, id, name      
 from tab

or

select ROW_NUMBER() OVER (ORDER BY id) rowid, id, name      
 from tab