complete support for DISTINCT keyword

lib/Doctrine/Query.php

@@ -339,6 +339,15 @@ class Doctrine_Query extends Doctrine_Query_Abstract implements Countable
     {
         $refs = Doctrine_Tokenizer::bracketExplode($dql, ',');
 
+        $pos   = strpos(trim($refs[0]), ' ');
+        $first = substr($refs[0], 0, $pos);
+        
+        if ($first === 'DISTINCT') {
+            $this->parts['distinct'] = true;
+            
+            $refs[0] = substr($refs[0], ++$pos);
+        }
+
         foreach ($refs as $reference) {
             $reference = trim($reference);
             if (strpos($reference, '(') !== false) {
@@ -350,6 +359,7 @@ class Doctrine_Query extends Doctrine_Query_Abstract implements Countable
                 }
             } else {
 
+
                 $e = explode('.', $reference);
                 if (count($e) > 2) {
                     $this->pendingFields[] = $reference;

lib/Doctrine/Query/Abstract.php

@@ -118,8 +118,8 @@ abstract class Doctrine_Query_Abstract extends Doctrine_Hydrate
      * @return Doctrine_Query
      */
     public function distinct($flag = true)
-    {
-        $this->_parts['distinct'] = (bool) $flag;
+    {   
+        $this->parts['distinct'] = (bool) $flag;
 
         return $this;
     }
@@ -133,7 +133,7 @@ abstract class Doctrine_Query_Abstract extends Doctrine_Hydrate
      */
     public function forUpdate($flag = true)
     {
-        $this->_parts[self::FOR_UPDATE] = (bool) $flag;
+        $this->parts[self::FOR_UPDATE] = (bool) $flag;
 
         return $this;
     }