diff --git a/model/SqlResultCollection.php b/model/SqlResultCollection.php
index 0d8a74d..11da844 100644
--- a/model/SqlResultCollection.php
+++ b/model/SqlResultCollection.php
@@ -1,6 +1,6 @@
 <?php
 
-class SqlResultCollection extends ArrayIterator
+class SqlResultCollection extends ArrayIterator implements iSqlResultItems
 {
     private $items;
 
@@ -12,8 +12,29 @@ class SqlResultCollection extends ArrayIterator
         }
     }
 
+    /**
+     * @return DbStatement[]
+     */
     public function fetchAll()
     {
-        return $this->items;
+        return (array) $this;
+    }
+
+    /**
+     * @param $field
+     * @return mixed
+     */
+    public function fetchField($field)
+    {
+        $item = $this->offsetGet(0);
+        return $item->{$field};
+    }
+
+    /**
+     * @return mixed
+     */
+    public function fetch()
+    {
+        return $this->offsetGet(0);
     }
 }
\ No newline at end of file
diff --git a/model/SqlResultProvider.php b/model/SqlResultProvider.php
index a9081dc..9ec9048 100644
--- a/model/SqlResultProvider.php
+++ b/model/SqlResultProvider.php
@@ -1,6 +1,6 @@
 <?php
 
-class SqlResultProvider
+class SqlResultProvider implements iSqlResultItems
 {
     /**
      * @var DbStatement
@@ -77,15 +77,6 @@ class SqlResultProvider
     }
 
     /**
-     * @return DbStatement[]|SqlResultCollection[]
-     */
-    public function fetchAll()
-    {
-        $this->defineResultItems();
-        return $this->result_items;
-    }
-
-    /**
      * @param $key
      * @return mixed
      * метод актуален после вызова assoc
@@ -96,6 +87,15 @@ class SqlResultProvider
     }
 
     /**
+     * @return DbStatement[]|SqlResultCollection[]
+     */
+    public function fetchAll()
+    {
+        $this->defineResultItems();
+        return $this->result_items;
+    }
+
+    /**
      * @param $field
      * @return mixed
      */
@@ -104,11 +104,17 @@ class SqlResultProvider
         return $this->result->fetchField($field);
     }
 
-    public function fetch($style = Db::FETCH_OBJ)
+    /**
+     * @return mixed
+     */
+    public function fetch()
     {
-        return $this->result->fetch($style);
+        return $this->result->fetch(Db::FETCH_OBJ);
     }
 
+    /**
+     * @return int
+     */
     public function affectedRows()
     {
         return $this->result->affectedRows();
diff --git a/model/iSqlResultItems.php b/model/iSqlResultItems.php
new file mode 100644
index 0000000..4e0ef72
--- /dev/null
+++ b/model/iSqlResultItems.php
@@ -0,0 +1,10 @@
+<?php
+
+interface iSqlResultItems
+{
+    public function fetchAll();
+
+    public function fetchField($field);
+
+    public function fetch();
+}
\ No newline at end of file