longtable spanning multicolumns

Question

How to use make a longtable span across a two-column document?

I'm working on a twocolumn class, and I'd like to make the longtable be centralized in the page, as well as to make the orphan items, i.e. last items that shows up in a separate (last, usually) page to follow the same pattern as the initial pages.

I've thought about a similar way as the use of \begin{table*}, but I couldn't figure out how to do that for longtable.

I'd really appreciate to hear some experience on that.

Answer 1

If you don't mind the table starting a new page then you can do

  \onecolumn
  \begin{longtable}....
  .....
  \end{longtable}
  \twocolumn

If that doesn't do what you need then probably you need to edit your question to add a complete but small example and say more exactly what you want it to produce.