Reply To: vertical strokes in table

To select the whole table, click in any cell and Command-Option-A. (Graham, hovering over the top LEFT hand corner worked for me.)

Using the Table Grid (proxy preview in Control Bar): Triple-Click to toggle between Selecting All or No strokes. I usually start with No strokes, 0 pt, Cell Styles->None, then start formatting.

Then a combination of Table and Cell Styles to get this:
https://i.imgur.com/zsUw8bk.png

This sort of a manual way to do it, which is ok for a small job, but it sounds like you might need something more automated. I’m still to trying to understand tables better, myself.