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copied!<p>From <a href="http://vyaskn.tripod.com/programming_faq.htm#q17" rel="nofollow noreferrer">http://vyaskn.tripod.com/programming_faq.htm#q17</a>:</p> <blockquote> <p><em>Oracle has a rownum to access rows of a table using row number or row id. Is there any equivalent for that in SQL Server? Or how to generate output with row number in SQL Server?</em></p> <p>There is no direct equivalent to Oracle's rownum or row id in SQL Server. Strictly speaking, in a relational database, rows within a table are not ordered and a row id won't really make sense. But if you need that functionality, consider the following three alternatives: </p> <ul> <li><p>Add an <code>IDENTITY</code> column to your table.</p></li> <li><p>Use the following query to generate a row number for each row. The following query generates a row number for each row in the authors table of pubs database. For this query to work, the table must have a unique key.</p> <pre><code>SELECT (SELECT COUNT(i.au_id) FROM pubs..authors i WHERE i.au_id >= o.au_id ) AS RowID, au_fname + ' ' + au_lname AS 'Author name' FROM pubs..authors o ORDER BY RowID </code></pre></li> <li><p>Use a temporary table approach, to store the entire resultset into a temporary table, along with a row id generated by the <code>IDENTITY()</code> function. Creating a temporary table will be costly, especially when you are working with large tables. Go for this approach, if you don't have a unique key in your table. </p></li> </ul> </blockquote>

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