I have few long tables with 4 columns. The first column is the most crucial. It holds some entries/terms.
When the table was created the rows were entered randomly as data came in. It will make sense to sort it alphabetically.
IN RH is it possible to sort based on a column like MS word?
Unfortunately not for either yourself or users.
For yourself it is a case of adding some blank columns / rows and rearranging things.
See www.grainge.org for free RoboHelp and Authoring information.
Something to consider as a workaround.
I'd try putting the information into a tool such as Microsoft Excel or similar. Perform the sort. Then save as HTML so you could easily copy and paste the HTML code into RoboHelp.