How to clear my table values ?

Hello All,

Can someone advise on how to clear my table values ? I have successfully uploaded and populate my file contents into a table. The problem occurs when I try to upload more files, the original data that was previously uploaded remains in the table and any new values read from the uploaded file was appended instead. Is there anyway to 'clear' the table before new values are written to it ? Thank you.

from

Kwok Wei