Index: t3lib/class.t3lib_sqlparser.php
===================================================================
--- t3lib/class.t3lib_sqlparser.php	(revision 6888)
+++ t3lib/class.t3lib_sqlparser.php	(working copy)
@@ -1041,10 +1041,10 @@
 							// - "/" (division)
 							// - "%" (modulo)
 						$calcOperators = '&|\+|-|\*|\/|%';
-		
+
 							// Fieldname:
-						if ($fieldName = $this->nextPart($parseString, '^([[:alnum:]._]+)([[:space:]]+|' . $calcOperators . '|<=|>=|<|>|=|!=|IS)')) {
-		
+						if (($fieldName = $this->nextPart($parseString, '^([[:alnum:]._]+)([[:space:]]+|' . $calcOperators . '|<=|>=|<|>|=|!=|IS)')) !== '') {
+
 								// Parse field name into field and table:
 							$tableField = explode('.', $fieldName, 2);
  							if (count($tableField) == 2) {