diff --git a/inc/db.php b/inc/db.php
index 566e621..71ca973 100644
--- a/inc/db.php
+++ b/inc/db.php
@@ -687,6 +687,11 @@ class Db extends PhpObject
 		$oResult = $this->selectRow($sTableName, $oConstraints, $sColumnName);
 		return empty($oResult)?false:$oResult;
 	}
+	
+	public function selectId($sTableName, $oConstraints)
+	{
+		return $this->selectValue($sTableName, self::getId($sTableName), $oConstraints);
+	}
 
 	public function pingValue($sTableName, $oConstraints)
 	{