autoincremental field

How can we give serial numbers to the records in a tableUse RowNumber() function. Check
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/RSCREATE/htm/rcr_creating_expressions_v1_3quq.asp?frame=true
for details.
--
Ravi Mumulla (Microsoft)
SQL Server Reporting Services
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"vinesh" <vineshk@.visitomega.com> wrote in message
news:%23sgjfUJcEHA.2520@.TK2MSFTNGP12.phx.gbl...
> How can we give serial numbers to the records in a table
>