Ryan Wallace wrote:
UPDATE pgweb SET textsearchable_index_col =
to_tsvector('english', coalesce(title,'') || coalesce(body,''));
WHERE textsearchable_index_col @@ to_tsquery('create & table')
Using this approach. Is there any way of retrieving which of the original
two columns the match was found in?
Afraid not - you're not indexing two columns, you're indexing one:
textsearchable_index_col.
You can add up to four weights to a tsvector though, typically for
title/body matching. See chapter 12.3 for details.
Failing that, where I've had many (a dozen) different sources but want
to search them all I've built a textsearch_blocks table with columns to
identify the source and have triggers that keep it up to date.
--
Richard Huxton
Archonet Ltd
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