An apparatus and method for handling a LET binding used in a WHERE clause of an XQuery FLWOR expression during an XML pivot join procedure. XPath steps under a LET binding are identified and marked as bindings. During a match graph construction phase of the pivot join procedure, the bindings are linked...http://www.google.com/patents/US7698295?utm_source=gb-gplus-sharePatent US7698295 - Method and apparatus for handling a LET binding
