diff --git a/src/PHPCR/Util/QOM/Sql2ToQomQueryConverter.php b/src/PHPCR/Util/QOM/Sql2ToQomQueryConverter.php
index 9305801..3161f43 100644
--- a/src/PHPCR/Util/QOM/Sql2ToQomQueryConverter.php
+++ b/src/PHPCR/Util/QOM/Sql2ToQomQueryConverter.php
@@ -700,7 +700,13 @@ protected function parseLiteral()
                 throw new \Exception("Syntax error: unterminated quoted string $token in '{$this->sql2}'");
             }
 
-            $token = substr($token, 1, -1);
+           $token = substr($token, 1, -1);
+        } else if (is_numeric($token)){
+            $token = strpos($token, '.') === false ? (int) $token : (float) $token;
+        } else if ($token == 'true') {
+            $token = true;
+        } else if ($token == 'false') {
+            $token = false;
         }
 
         return $this->factory->literal($token);