You should always back up your database or the destination table before running an append query.

Name: You should always back up your database or the destination table before running an append query.
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Quizplus · Accepted Answer

It is always recommended to back up your data before making any changes or modifications to it. In case something goes wrong during the append query process, having a backup can prevent data loss and make data recovery easier.

You Should Always Back Up Your Database or the Destination