Update dml-at.md
description updated.
title: AT
---
-The SELECT statement can include an AT clause to query previous versions of your data at a specific time in the past.
+The SELECT statement can include an AT clause to query previous versions of your data with a specific timestamp.
This is part of the Databend's Time Travel feature that allows you to query, back up, and restore from a previous version of your data within the retention period.
