> I would like to generate Snippets from MATCHes in two columns,
> however, I get the following error: "unable to use function MATCH in
> the requested context" with the following query --

I think you ran into the same problem as I did:

http://www.nabble.com/Fts3-and-JOIN-sometimes-results-in-inability-to-use-MATCH-operator-td18851478.html

Unfortunately there is no solution right now. I've discussed that on
the development mailing list as well where I have been confirmed this
is a bug. I have also opened a trac ticket about it:

http://www.sqlite.org/cvstrac/tktview?tn=3281,3

There is a workaround, which is to used nested queries instead of
joins (i.e. "where x in (select ...)" instead of "join"). I've met the
Snippet function for the first time in your mail and failed to find
any documentation about (mind to give me a pointer here? it looks
interesting) so I cannot convert your example query but I'm confident
it can be fixed this way.

Alex.
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