Hi, i copied the syntax from some code, always mess up with placement of quotes. I realised i needed another like after testing in sql server. Im just using the where to filter from two dropdowns. the first holds category parents and the second one contains filtered children based on the parents. Not too sure if best approach, as when i perform postback on the second dropdown it tends to clear the parent filter. would i be better inserting auto postback in the drop down controls ?