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    <p>This should work (not sure with the origin of your columns though):</p> <pre><code>WITH cte AS (SELECT position, price, orderid, buylog = Min(buylog) OVER( partition BY position,orderid), otherlog = Max(otherlog) OVER( partition BY position,orderid), rn = Row_number() OVER( partition BY position,orderid ORDER BY position) FROM T1) SELECT position, price, orderid, buylog, otherlog FROM cte WHERE rn = 1 </code></pre> <p>Here's a <a href="http://www.sqlfiddle.com/#!3/37eff/4/0" rel="nofollow"><strong>DEMO</strong></a></p> <p><strong>Edit</strong> So here is the complete query with your joins, to take your edited question into account:</p> <pre><code>WITH cte AS (SELECT olt.position, ot.price, ot.orderid, ot.buylog = Min(ot.buylog) OVER ( partition BY olt.position, ot.orderid), olt.otherlog = Max(olt.otherlog) OVER ( partition BY olt.position, ot.orderid), rn=Row_number() OVER( partition BY olt.position ORDER BY olt.position) FROM ordertable AS ot INNER JOIN anothertable AS at ON ordertable.userid = anothertable.userid INNER JOIN otherlogtable AS olt ON anothertable.id = otherlogtable.sessionlogid) SELECT position, price, orderid, buylog, otherlog FROM cte WHERE rn = 1 </code></pre> <p>The problem was:</p> <ol> <li>remove the table names from the outer select on the <code>CTE</code> (e.g. <code>SELECT position</code> instead of <code>SELECT olt.position</code>) </li> <li>remove the comma between the <code>PARTITION BY</code> part of the <code>ROW_NUMBER</code> and the <code>ORDER BY</code>: <code>rn=Row_number() OVER( partition BY olt.position ORDER BY olt.position)</code></li> </ol>
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    1. POQuery with value1<value2 returns multiple results
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    1. USTim Schmelter
    1. USTim Schmelter
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    1. COwow, i never worked with cte's and over() and row-number... xD i'll try to adapt this to my actual tables. thank you!
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    2. COhey @tims, i managed to remove all errors, but one still remains: Msg 102, Level 15, State 1, Line 7 Incorrect syntax near '='. line 7 is "as (select position,", right after "with cte". what could be the problem here?
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    3. CO@msa: Maybe you have something before the cte, then you need to teminate your previous statement with `;`, you can start it in this way: `;WITH CTE AS ...`. http://stackoverflow.com/a/710697/284240
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