title: No duplication of code in sql
body: <p>I'm having a problem on my sql statement. It must have no duplicate on my symbol codes. How I will the removed the other symbol codes with duplicates?</p>
  
  <pre><code> SELECT     TOP (10) dbo.ltb_stockinfo.**SymbolCode**, dbo.stockInfoPrices.ChangePercent
   FROM       dbo.ltb_stockinfo INNER JOIN
              dbo.stockInfoPrices ON dbo.ltb_stockinfo.ID = dbo.stockInfoPrices.SymbolListId
  WHERE     (dbo.ltb_stockinfo.NSCMarketSegment = N'NO')
  GROUP BY dbo.ltb_stockinfo.SymbolCode, dbo.stockInfoPrices.ChangePercent
  ORDER BY dbo.stockInfoPrices.ChangePercent DESC
  </code></pre>
  
  <p>Much thanks!</p>