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    <p>If you want to uniquely identify a row within the table rather than your result set, then you need to look at using something like an IDENTITY column. See "IDENTITY property" in the SQL Server help. SQL Server does not auto-generate an ID for each row in the table as Oracle does, so you have to go to the trouble of creating your own ID column and explicitly fetch it in your query.</p> <p><strong>EDIT:</strong> for dynamic numbering of result set rows see below, but that would probably an equivalent for Oracle's ROWNUM and I assume from all the comments on the page that you want the stuff above. For SQL Server 2005 and later you can use the new <a href="http://msdn.microsoft.com/en-us/library/ms189798.aspx" rel="noreferrer">Ranking Functions</a> function to achieve dynamic numbering of rows.</p> <p>For example I do this on a query of mine:</p> <pre><code>select row_number() over (order by rn_execution_date asc) as 'Row Number', rn_execution_date as 'Execution Date', count(*) as 'Count' from td.run where rn_execution_date &gt;= '2009-05-19' group by rn_execution_date order by rn_execution_date asc </code></pre> <p>Will give you:</p> <pre><code>Row Number Execution Date Count ---------- ----------------- ----- 1 2009-05-19 00:00:00.000 280 2 2009-05-20 00:00:00.000 269 3 2009-05-21 00:00:00.000 279 </code></pre> <p>There's also an article on <a href="http://support.microsoft.com/default.aspx?scid=KB;EN-US;q186133" rel="noreferrer">support.microsoft.com</a> on dynamically numbering rows.</p>
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