diff --git a/model/SqlModel.php b/model/SqlModel.php
index 2d12afe..083869f 100644
--- a/model/SqlModel.php
+++ b/model/SqlModel.php
@@ -15,6 +15,24 @@
  */
 abstract class SqlModel extends Model
 {
+    const SELECT = 10;
+    const DISTINCT = 11;
+    const WHERE = 12;
+    const ORDER = 13;
+    const ORDER_TO_DESC = 14;
+    const LIMIT = 15;
+    const OFFSET = 16;
+
+    protected static $criteria_data_keys = array(
+        self::SELECT,
+        self::DISTINCT,
+        self::WHERE,
+        self::ORDER,
+/**        self::ORDER_TO_DESC, // no to be process in foreach criteria_data @see SqlModel::find() */
+        self::LIMIT,
+/**      self::OFFSET // no to be process in foreach criteria_data @see SqlModel::find() */
+    );
+
     /**
      * @param string $ident
      * @return string Quoted identifier.
@@ -179,8 +197,9 @@ abstract class SqlModel extends Model
 
     /**
      * @param $criteria SqlCriteria
+     * @return string Sql string expression
      */
-    public function find($criteria)
+    protected function criteria($criteria)
     {
         foreach ($criteria->select as $field => &$term) {
             if (is_int($field)) {
@@ -202,10 +221,48 @@ abstract class SqlModel extends Model
         if ($criteria->distinct != '') {
             $criteria->distinct = 'DISTINCT ' . $this->db->quoteIdentifier($criteria->distinct);
         }
-        $sql = 'SELECT ' . (($criteria->distinct) ? $criteria->distinct : implode(',', $criteria->select))
+        return 'SELECT ' . (($criteria->distinct) ? $criteria->distinct : implode(',', $criteria->select))
             . ' FROM ' . $this->db->quoteIdentifier($this->table)
             . (($criteria->where) ? (' WHERE ' . implode(' AND ', $criteria->where)) : '')
             . (($criteria->order) ? (' ORDER BY ' . implode(',', $criteria->order)) : '')
             . (($criteria->limit) ? (' LIMIT ' . implode(',',array_map(function($item){return intval($item);},explode(',',$criteria->limit)))) : '');
     }
+
+    /**
+     * @param $criteria_data array
+     * @ex array(
+     * SqlModel::SELECT => '*',
+     * SqlModel::WHERE => array('field=?', 1),
+     * SqlModel::ORDER => array('last_name', 'first_name'),
+     * SqlModel::ORDER_TO_DESC => array('last_name'),
+     * SqlModel::LIMIT => 10)
+     * @return mixed|DbStatement[]
+     */
+    public function find($criteria_data)
+    {
+        $criteria = new SqlCriteria();
+        foreach (self::$criteria_data_keys as $criteria_data_key) {
+            if (isset($criteria_data[$criteria_data_key])) {
+                $value = $criteria_data[$criteria_data_key];
+                switch ($criteria_data_key) {
+                    case self::SELECT:
+                        $criteria->select($value);
+                        break;
+                    case self::DISTINCT:
+                        $criteria->distinct($value);
+                        break;
+                    case self::WHERE:
+                        $criteria->where($value);
+                        break;
+                    case self::ORDER:
+                        $criteria->order($value, ((isset($criteria_data[self::ORDER_TO_DESC])) ? $criteria_data[self::ORDER_TO_DESC] : null));
+                        break;
+                    case self::LIMIT:
+                        $criteria->limit($value, ((isset($criteria_data[self::OFFSET])) ? $criteria_data[self::OFFSET] : null));
+                        break;
+                }
+            }
+        }
+        return self::fetchAll($this->criteria($criteria));
+    }
 }
\ No newline at end of file