It does not translates text inside columns
You can see result here https://uk.wikipedia.org/w/index.php?title=%D0%9C%D0%B5%D0%BD%D1%82%D0%B0%D0%BB%D1%96%D1%82%D0%B5%D1%82_%D0%BA%D1%80%D0%B0%D0%B1%D0%B0&oldid=22945428
It does not translates text inside columns
You can see result here https://uk.wikipedia.org/w/index.php?title=%D0%9C%D0%B5%D0%BD%D1%82%D0%B0%D0%BB%D1%96%D1%82%D0%B5%D1%82_%D0%BA%D1%80%D0%B0%D0%B1%D0%B0&oldid=22945428
here it is https://uk.wikipedia.org/wiki/%D0%A8%D0%B0%D0%B1%D0%BB%D0%BE%D0%BD:Columns-list
If you use the GoogleTrans gadget translation feature you can select the table and then press CTRL-ALT and then all the nodes in the table will be translated. This is very good, for instance, for track and field results, since the city and then the event will be correctly translated. For many tables, which have uncomplicated, repetitive text within them, machine translation is very good.
See here help on this. The GoogleTrans gadget uses Google Translation services.