Stroke on only one side of a square?

Yes, related to the last question i posted, i am trying to hide a column in a table which i can't delete as i will need it later, and i don't want to have 2 documents. So i want the left hand stroke of the square I'm using to hide the column to look like the right hand stroke of the table. Sounds mad but it's about the best, easiest and quickest solution I've had so far lol!

I suppose i could just use a separate stroke and square but i want to keep this as simple as possible so if there is a way to have one side of the square a stroke, that would be fab. I fear there is not an easy way to do this.....