Extend SqlCriteria::select() - use array or string for setting multiple fields of one call that method.

model/SqlCriteria.php

@@ -106,12 +106,16 @@ class SqlCriteria
     }
 
     /**
-     * @param string $field
+     * @param string|array $fields
+     * @ex SqlCriteria::select('field')
+     * @ex SqlCriteria->select(array('field1', 'field2'))
+     * @ex SqlCriteria->select('field1,field2')
      * @return SqlCriteria
      */
-    public function select($field)
+    public function select($fields)
     {
-        $this->select[] = $field;
+        $fields = explode(',', $fields);
+        $this->select = $this->select + $fields;
         return $this;
     }