diff --git a/lib/Doctrine/ORM/Query/Expr.php b/lib/Doctrine/ORM/Query/Expr.php
index 0cb917b6b..645761b39 100644
--- a/lib/Doctrine/ORM/Query/Expr.php
+++ b/lib/Doctrine/ORM/Query/Expr.php
@@ -47,6 +47,11 @@ class Expr
     {
         return new Expr\Select(func_get_args());
     }
+    
+    public static function from($from, $alias = null)
+    {
+        return new Expr\From($from, $alias);
+    }
 
     public static function orderBy($sort = null, $order = null)
     {
@@ -113,7 +118,7 @@ class Expr
         return new Expr\Func('COUNT', array($x));
     }
 
-    public static function countDistinct()
+    public static function countDistinct($x)
     {
         return 'COUNT(DISTINCT ' . implode(', ', func_get_args()) . ')';
     }
@@ -183,14 +188,9 @@ class Expr
         return new Expr\Func($x . ' NOT IN', (array) $y);
     }
 
-    public static function notEqual($x, $y)
-    {
-        return new Expr\Comparison($x, '!=', $y);
-    }
-
     public static function like($x, $y)
     {
-        return new Expr\Math($x, 'LIKE', $y);
+        return new Expr\Comparison($x, 'LIKE', $y);
     }
 
     public static function concat($x, $y)
@@ -232,8 +232,8 @@ class Expr
         return new Expr\Func('BETWEEN', array($val, $x, $y));
     }
 
-    public static function trim()
+    public static function trim($x)
     {
-        return new Expr\Func('TRIM', func_get_args());
+        return new Expr\Func('TRIM', $x);
     }
 }
\ No newline at end of file
diff --git a/lib/Doctrine/ORM/Query/Expr/From.php b/lib/Doctrine/ORM/Query/Expr/From.php
new file mode 100644
index 000000000..02e6179d5
--- /dev/null
+++ b/lib/Doctrine/ORM/Query/Expr/From.php
@@ -0,0 +1,48 @@
+<?php
+/*
+ *  $Id$
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the LGPL. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+namespace Doctrine\ORM\Query\Expr;
+
+/**
+ * Expression class for DQL from
+ *
+ * @author      Jonathan H. Wage <jonwage@gmail.com>
+ * @license     http://www.opensource.org/licenses/lgpl-license.php LGPL
+ * @link        http://www.phpdoctrine.org
+ * @since       2.0
+ * @version     $Revision$
+ */
+class From
+{
+    private $_from;
+    private $_alias;
+
+    public function __construct($from, $alias = null)
+    {
+        $this->_from  = $from;
+        $this->_alias  = $alias;
+    }
+
+    public function __toString()
+    {
+        return $this->_from . ($this->_alias ? ' ' . $this->_alias : '');
+    }
+}
\ No newline at end of file
diff --git a/lib/Doctrine/ORM/Query/Expr/Func.php b/lib/Doctrine/ORM/Query/Expr/Func.php
index 72bea0e82..55f0a3497 100644
--- a/lib/Doctrine/ORM/Query/Expr/Func.php
+++ b/lib/Doctrine/ORM/Query/Expr/Func.php
@@ -37,8 +37,8 @@ class Func
 
     public function __construct($name, $arguments)
     {
-        $this->_name  = $name;
-        $this->_arguments  = $arguments;
+        $this->_name       = $name;
+        $this->_arguments  = (array) $arguments;
     }
 
     public function __toString()
diff --git a/lib/Doctrine/ORM/QueryBuilder.php b/lib/Doctrine/ORM/QueryBuilder.php
index afcc424e0..efbdfafe9 100644
--- a/lib/Doctrine/ORM/QueryBuilder.php
+++ b/lib/Doctrine/ORM/QueryBuilder.php
@@ -252,9 +252,9 @@ class QueryBuilder
         return $this->add('set', Expr::eq($key, $value), true);
     }
 
-    public function from($from, $alias)
+    public function from($from, $alias = null)
     {
-        return $this->add('from', $from . ' ' . $alias, true);
+        return $this->add('from', Expr::from($from, $alias), true);
     }
 
     public function innerJoin($parentAlias, $join, $alias, $condition = null)
diff --git a/tests/Doctrine/Tests/ORM/Query/ExprTest.php b/tests/Doctrine/Tests/ORM/Query/ExprTest.php
index 3ae129ce9..942196c8c 100644
--- a/tests/Doctrine/Tests/ORM/Query/ExprTest.php
+++ b/tests/Doctrine/Tests/ORM/Query/ExprTest.php
@@ -140,11 +140,6 @@ class ExprTest extends \Doctrine\Tests\OrmTestCase
         $this->assertEquals('1 = 1', (string) Expr::eq(1, 1));
     }
 
-    public function testNotEqualExpr()
-    {
-        $this->assertEquals('1 != 2', (string) Expr::notEqual(1, 2));
-    }
-
     public function testLikeExpr()
     {
         $this->assertEquals('a.description LIKE :description', (string) Expr::like('a.description', ':description'));