Merge branch 'develop-olympus' into develop

* develop-olympus:
  [ticket/9685] Buffer posts for search indexing when using mssqlnative.

phpBB/includes/db/dbal.php

@@ -241,6 +241,16 @@ class dbal
 		return $this->_sql_like_expression('LIKE \'' . $this->sql_escape($expression) . '\'');
 	}
 
+	/**
+	* Returns whether results of a query need to be buffered to run a transaction while iterating over them.
+	*
+	* @return bool Whether buffering is required.
+	*/
+	function sql_buffer_nested_transaction()
+	{
+		return false;
+	}
+
 	/**
 	* SQL Transaction
 	* @access private