Can't adjust table column width

Jay Freedman The posted solutions did not work for me. I had added a column to the left in an existing table. The right edge of the column to the right went off the page (it was a two-column table).  The fix that worked for me was to change the orientation to landscape and select a paper size large enough for the whole table to appear on the page. For me, that meant selecting tabloid (11" x 17").  Then I could grab the right edge of the table and size that column so that the whole table would appear on a portrait-oriented 8.8" x 11" page. I then changed to size and orientation back to portrait, letter size.