How to Clear categories_description?

I need the SQL line so I can clear

categories_description inside table: zen_categories_description

I am just trying to clear the field: categories_description and don't want to delete anything else in there.

There are far better ways to remove a description without doing it this way.
Give us a little better description, the information requested in the posting tips, a URL, and we can give a better answer.

I need to clear all my category description writing, because I duplicated the site and am tayloring it for another website, so I cannot have duplicate writing in the categories.

Without knowing the number of categories, why would you not just click on the category's edit button in the admin and change the description?

Catalog >> Categories/Products >> green button with e in it.

You are going to have to manually enter each new category description, so for an "ordinary" site deleting the old one at the same time would be trivial. So would the right SQL statement.

But, Guys, I WANT TO DELETE ALL THE CATEGORY CONTENTS WITH AN SQL STATEMENT:

Something like

TRUNCATE TABLE "that field of zen_categories_description"

BUt I don't know the right syntax