diff --git a/model/SqlCriteria.php b/model/SqlCriteria.php
index 747ffee..695e776 100644
--- a/model/SqlCriteria.php
+++ b/model/SqlCriteria.php
@@ -2,44 +2,50 @@
 
 class SqlCriteria
 {
-    public $select = '*';
+    private $select = array();
 
-    public $distinct = '';
+    private $distinct = '';
 
-    public $where = array();
+    private $where = array();
 
-    public $order = array();
+    private $order = array('sort' => array(), 'order' => array());
 
-    public $limit = '';
+    private $limit = '';
 
     /**
-     * @return SqlCriteria
+     * @var SqlModel
      */
-    public static function getInstance()
+    private $model;
+
+    public function find()
     {
-        return self;
+
     }
 
     /**
-     * @param $conditions array @ex array('field=?' => $value, 'field in ? => new DbExpr('(1,2,3)'))
+     * @param $cond string Condition with "?" placeholder @ex 'field=?'
+     * @param $value string|array|DbExpr Value. Array transformed to DbExpr(implode(',' Array)) All elements in the array mast be integer
      * @return SqlCriteria
+     * @desc Allow multiple calls
      */
-    public function where($conditions)
+    public function where($cond, $value)
     {
-        $this->where = $conditions;
+        $this->where[$cond] = $value;
         return $this;
     }
 
     /**
-     * @param $fields array @ex array('field1', 'field2' => SqlModel::ORDER_DESC)
+     * @param $field string Field @ex 'field'
+     * @param $order_desc bool Descendant sort direction
      * @return SqlCriteria
+     * @desc Allow multiple calls
      */
-    public function order($fields)
+    public function order($field, $order_desc = false)
     {
-        if (!is_array($fields)) {
-            $fields = array($fields);
+        $this->order['sort'][] = $field;
+        if ($order_desc) {
+            $this->order['order'][$field] = 'desc';
         }
-        $this->order = $fields;
         return $this;
     }
 
@@ -50,23 +56,20 @@ class SqlCriteria
      */
     public function limit($limit, $offset = 0)
     {
-        if (empty($offset)) {
-            $this->limit = (int) $limit;
+        if ($offset) {
+            $this->limit = (int) $offset . ',';
         }
-        $this->limit = (int)$limit . ',' . (int) $offset;
+        $this->limit .= (int) $limit;
         return $this;
     }
 
     /**
-     * @param mixed $select array @ex array('field1', 'field2', 'field3' => 'field')
-     * @return string
+     * @param string $field
+     * @return SqlCriteria
      */
-    public function select($select)
+    public function select($field)
     {
-        if (!is_array($select)) {
-            $select = array($select);
-        }
-        $this->select = $select;
+        $this->select[] = $field;
         return $this;
     }
 
diff --git a/model/SqlDbDriver.php b/model/SqlDbDriver.php
index 1952136..4714578 100644
--- a/model/SqlDbDriver.php
+++ b/model/SqlDbDriver.php
@@ -127,6 +127,7 @@ abstract class SqlDbDriver extends DbDriver
     /**
      * @param mixed $where
      * @return string
+     * TODO: Если cond Это int и term Это тоже int - кидать Exception (иначе эта ошибка повлечет обновление всех записей в таблице
      */
     protected function whereExpr($where)
     {
diff --git a/model/SqlModel.php b/model/SqlModel.php
index 4abcdc2..a284786 100644
--- a/model/SqlModel.php
+++ b/model/SqlModel.php
@@ -15,29 +15,6 @@
  */
 abstract class SqlModel extends Model
 {
-    const SELECT = 10;
-    const DISTINCT = 11;
-    const WHERE = 12;
-    const ORDER = 13;
-    const LIMIT = 15;
-    const OFFSET = 16;
-
-    const ORDER_DESC = 20;
-    const ORDER_ASC = 21;
-
-    const ASSOC_BY_FIELD = 30;
-    const ASSOC_AS_ARRAY = 31;
-    const ASSOC_BY_FIELD_IN_ARRAY = 32;
-
-    protected static $criteria_data_keys = array(
-        self::SELECT,
-        self::DISTINCT,
-        self::WHERE,
-        self::ORDER,
-        self::LIMIT,
-/**      self::OFFSET // that key no to be a process in foreach criteria_data @see SqlModel::find() */
-    );
-
     /**
      * @param string $ident
      * @return string Quoted identifier.
@@ -100,9 +77,21 @@ abstract class SqlModel extends Model
     {
         $sql = '';
         if (isset($params['sort'])) {
-            $order = (isset($params['order']) && $params['order'] == 'desc') ? 'DESC' : 'ASC';
-            if (in_array($params['sort'], $sortable)) {
-                $sql = ' ORDER BY ' . $this->identify($params['sort']) .  ' ' . $order;
+            if (!is_array($params['sort'])) {
+                if (isset($params['order'])) {
+                    $params['order'] = array($params['sort'] => $params['order']);
+                }
+                $params['sort'] = array($params['sort']);
+            }
+            $order_list = array();
+            for ($i = 0; $i < count($params['sort']); $i++) {
+                $order = (isset($params['order'][$params['sort'][$i]]) && $params['order'][$params['sort'][$i]] == 'desc') ? 'DESC' : 'ASC';
+                if (in_array($params['sort'][$i], $sortable)) {
+                    $order_list[] = $this->identify($params['sort'][$i]) .  ' ' . $order;
+                }
+            }
+            if ($order_list) {
+                $sql = ' ORDER BY ' . implode(',', $order_list);
             }
         }
         return $sql;
@@ -200,16 +189,13 @@ abstract class SqlModel extends Model
         return $result;
     }
 
-    /**
-     * @param $criteria SqlCriteria
-     * @return string Sql string expression
-     */
-    protected function criteria($criteria)
+
+    public function find($select, $distinct, $where, $order, $limit)
     {
-        if (!is_array($criteria->select)) {
-            $criteria->select = array(new DbExpr($criteria->select));
+        if (!$select) {
+            $select = array(new DbExpr('*'));
         }
-        foreach ($criteria->select as $field => &$term) {
+        foreach ($select as $field => &$term) {
             if (is_int($field)) {
                 if ($term instanceof DbExpr) {
                     $term = (string) $term;
@@ -220,158 +206,31 @@ abstract class SqlModel extends Model
                 $term = $this->db->quoteIdentifier($field) . ' as ' . $this->db->quoteIdentifier($term);
             }
         }
-        foreach ($criteria->where as $cond => &$term) {
-            if (is_int($cond)) {
-                if ($term instanceof DbExpr) {
-                    $term = (string) $term;
-                }
-            } else {
-                if (is_array($term)) {
-                    $term = new DbExpr('(' . implode(',', array_map(function($item){return intval($item);}, $term)) . ')');
-                }
-                $term = $this->db->quoteInto($cond, $term);
-            }
-        }
-        foreach ($criteria->order as $field => $term) {
-            if (is_int($field)) {
-                $term = $this->db->quoteIdentifier($term);
-            } else {
-                $order_direction = '';
-                switch ($term) {
-                    case self::ORDER_DESC:
-                        $order_direction .= ' DESC';
-                        break;
-                    case self::ORDER_ASC:
-                        $order_direction .= ' ASC';
-                        break;
-                }
-                $term = $this->db->quoteIdentifier($field) . $order_direction;
-
-            }
-        }
-        if ($criteria->distinct != '') {
-            $criteria->distinct = 'DISTINCT ' . $this->db->quoteIdentifier($criteria->distinct);
-        }
-        if ($criteria->limit != '') {
-            $criteria->limit = implode(',',array_map(function($item){return intval($item);},explode(',',$criteria->limit)));
-        }
-        return 'SELECT ' . (($criteria->distinct) ? $criteria->distinct : implode(',', $criteria->select))
-            . ' FROM ' . $this->table()
-            . (($criteria->where) ? (' WHERE ' . implode(' AND ', $criteria->where)) : '')
-            . (($criteria->order) ? (' ORDER BY ' . implode(',', $criteria->order)) : '')
-            . (($criteria->limit) ? (' LIMIT ' . $criteria->limit) : '');
-    }
-
-    /**
-     * @param $criteria_data array
-     * @ex array(
-     * SqlModel::SELECT => '*',
-     * SqlModel::WHERE => array('field=?', 1),
-     * SqlModel::ORDER => array('last_name', 'first_name' => SqlModel::ORDER_DESC),
-     * SqlModel::LIMIT => 10)
-     * @return mixed|DbStatement[]
-     */
-    public function find($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);
-                        break;
-                    case self::LIMIT:
-                        $criteria->limit($value, ((isset($criteria_data[self::OFFSET])) ? $criteria_data[self::OFFSET] : null));
-                        break;
-                }
+        foreach ($where as $cond => &$term) {
+            if (is_array($term)) {
+                $term = new DbExpr('(' . implode(',', array_map(function($item){return intval($item);}, $term)) . ')');
             }
+            $term = $this->db->quoteInto($cond, $term);
         }
-        $data = $this->criteria($criteria);
-        if (isset($criteria_data[self::ASSOC_BY_FIELD])) {
-            return self::fetchAllAssocByField($data, array(), $criteria_data[self::ASSOC_BY_FIELD], ((isset($criteria_data[self::ASSOC_AS_ARRAY])) ? $criteria_data[self::ASSOC_AS_ARRAY] : false), ((isset($criteria_data[self::ASSOC_BY_FIELD_IN_ARRAY])) ? $criteria_data[self::ASSOC_BY_FIELD_IN_ARRAY] : null));
-        } else {
-            return self::fetchAll($data);
+        if ($distinct != '') {
+            $distinct = 'DISTINCT ' . $this->db->quoteIdentifier($distinct);
         }
-    }
-
-
-    /**
-     * @param $data string
-     * @param $params array
-     * @param null|string $field
-     * @param bool $assoc_as_array
-     * @param null|string $field_assoc_in_array
-     * @return array
-     * @throws ErrorException|GeneralException
-     */
-    protected function fetchAllAssocByField($data, $params, $field = null, $assoc_as_array = false, $field_assoc_in_array = null)
-    {
-        $items = self::fetchAll($data, $params);
-        if (is_null($field)) {
-            $field = $this->key;
+        if ($limit != '') {
+            $limit = implode(',',array_map(function($item){return intval($item);},explode(',',$limit)));
         }
-        return self::assocByField($items, $field, $assoc_as_array, $field_assoc_in_array);
+        $result_items = parent::fetchAll('SELECT ' . (($distinct) ? $distinct : implode(',', $select))
+                    . ' FROM ' . $this->table()
+                    . (($where) ? (' WHERE ' . implode(' AND ', $where)) : '')
+                    . (($order) ? ($this->order($order, $order['sort'])) : '')
+                    . (($limit) ? (' LIMIT ' . $limit) : ''));
+        return new SqlResultProvider($result_items);
     }
 
     /**
-     * @param $items
-     * @param $field
-     * @param bool $assoc_as_array
-     * @param $field_assoc_in_array null|string
-     * @param $disable_assoc_in_array bool
-     * @return array
-     * @throws ErrorException|GeneralException
+     * @return SqlCriteria
      */
-    public function assocByField($items, $field, $assoc_as_array = false, $field_assoc_in_array = null, $disable_assoc_in_array = false)
-    {
-        $items_assoc_by_field = array();
-        $primary_key_not_exists_in_items = false;
-        foreach ($items as $item) {
-            if (!isset($item->{$field})) {
-                throw new GeneralException('Undefined field. ' . $field);
-            }
-            if ($assoc_as_array) {
-                if (!isset($items_assoc_by_field[$item->{$field}])) {
-                    $items_assoc_by_field[$item->{$field}] = array();
-                }
-                $items_assoc_by_field[$item->{$field}][] = $item;
-                if (!$primary_key_not_exists_in_items && $this->key && !isset($item->{$this->key})) {
-                    $primary_key_not_exists_in_items = true;
-                }
-            } else {
-                if (isset($items_assoc_by_field[$item->{$field}])) {
-                    throw new ErrorException('Field not unique. May be use assoc_as_array. ' . $field);
-                }
-                $items_assoc_by_field[$item->{$field}] = $item;
-            }
-        }
-        // Ассоциирование внутри каждого элемента массива по первичному ключу
-        // Если первичного ключа нет (не указан в модели или нет поля с первичным ключом в результах выборки) - ассоциирование внутри не производится
-        // Если указан $field_assoc_in_array - ассоциирование произовдится по этому полю (вернет ошибку, если этого поля нет в результатх выборки)
-        // Параметр $disable_assoc_in_array отключает ассоциирование внутри результирующего массива
-        if ($assoc_as_array && !$disable_assoc_in_array &&
-            (($this->key && !$primary_key_not_exists_in_items) || $field_assoc_in_array)
-        ) {
-            foreach ($items_assoc_by_field as $key => $value) {
-                $items_assoc_by_field[$key] = self::assocByField($items_assoc_by_field[$key], (($field_assoc_in_array) ? $field_assoc_in_array : $this->key));
-            }
-        }
-        return $items_assoc_by_field;
-    }
-
-    public function assocByFieldAndGetKeys($items, $field)
+    public function criteria()
     {
-        $items = self::assocByField($items, $field, true, null, true);
-        return array_keys($items);
+        return new SqlCriteria();
     }
 }
\ No newline at end of file
diff --git a/model/SqlResultProvider.php b/model/SqlResultProvider.php
new file mode 100644
index 0000000..fa7f2b8
--- /dev/null
+++ b/model/SqlResultProvider.php
@@ -0,0 +1,73 @@
+<?php
+
+class SqlResultProvider
+{
+    /**
+     * @var array
+     */
+    private $result_items;
+
+    private $result_items_base;
+
+    /**
+     * @param $result_items array
+     */
+    public function __construct($result_items)
+    {
+        $this->result_items = $result_items;
+    }
+
+    public function assoc($field, $assoc_as_array = false, $field_assoc_in_array = null)
+    {
+        if (is_null($this->result_items_base)) {
+            $this->result_items_base = $this->result_items;
+        }
+        $result_items_assoc = array();
+        foreach ($this->result_items_base as $item) {
+            if (!isset($item->{$field})) {
+                throw new ErrorException('Undefined field. ' . $field);
+            }
+            if ($assoc_as_array) {
+                if (!isset($result_items_assoc[$item->{$field}])) {
+                    $result_items_assoc[$item->{$field}] = array();
+                }
+                $result_items_assoc[$item->{$field}][] = $item;
+            } else {
+                if (isset($result_items_assoc[$item->{$field}])) {
+                    throw new ErrorException('Field not unique. May be use assoc_as_array. ' . $field);
+                }
+                $result_items_assoc[$item->{$field}] = $item;
+            }
+        }
+        // Ассоциирование внутри каждого элемента массива
+        // $field_assoc_in_array - ассоциирование произовдится по этому полю (вернет ошибку, если этого поля нет в результатх выборки)
+        if ($assoc_as_array && $field_assoc_in_array) {
+            foreach ($result_items_assoc as &$value) {
+                $sql_result_provider = new SqlResultProvider($value);
+                $value = $sql_result_provider->assoc($field_assoc_in_array)->fetchAll();
+            }
+        }
+        $this->result_items = $result_items_assoc;
+        return $this;
+    }
+
+    public function getKeys()
+    {
+        return array_keys($this->result_items);
+    }
+
+    public function fetchAll()
+    {
+        return $this->result_items;
+    }
+
+    public function fetchKey($key)
+    {
+        return $this->result_items[$key];
+    }
+
+    public function fetch()
+    {
+        return current($this->result_items);
+    }
+}
\ No newline at end of file