Re: default_text_search_config and expression indexes

Heikki Linnakangas wrote:
> Bruce Momjian wrote:
> > Heikki Linnakangas wrote:
> >> Bruce Momjian wrote:
> >>> Heikki Linnakangas wrote:
> >>>> Removing the default configuration setting altogether removes the 2nd
> >>>> problem, but that's not good from a usability point of view. And it
> >>>> doesn't solve the general issue, you can still do things like:
> >>>> SELECT * FROM foo WHERE to_tsvector('confA', textcol) @@
> >>>> to_tsquery('confB', 'query');
> >>> True, but in that case you are specifically naming different
> >>> configurations, so it is hopefully obvious you have a mismatch.
> >> There's many more subtle ways to do that. For example, filling a
> >> tsvector column using a DEFAULT clause. But then you sometimes fill it
> >> in the application instead, with a different configuration. Or if one of
> >> the function calls is buried in another user defined function.
> >>
> >> I don't think explicitly naming the configuration gives enough protection.
> >
> > Oh, wow, OK, well in that case the text search API isn't ready and we
> > will have to hold this for 8.4.
>
> That would be unfortunate :(. Sorry I haven't looked at this earlier. Do
> you think that implementing a strongly typed system is too much work for
> 8.3?

Yea, probably. See my other posting with an updated subject line.

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://www.enterprisedb.com

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