I would try to align vertically a table in a page. I have a page contains only a table and I would put it at the center of the page. To center it horizontally I used \centering but what command should I use to center it vertically?
If you have a page containing only a table, there's no need to put excessive code. It's enough to define a table, as it is. The table will be put in the middle of page, automatically.