Joshua D. Drake wrote:
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> Bruce Momjian wrote:
> > Trevor Talbot wrote:
> >> On 8/18/07, Bruce Momjian <bruce@momjian.us> wrote:
> >>
> >>> Remember an expression index can be a user-created function so you can
> >>> embed whatever you want in your function and just index it's output,
> >>> just like you would with a trigger creating a separate column.
> >> Well, you could create a function that returns a tsvector, but how do
> >> you get that to work with queries? I've been under the impression the
> >> expressions need to match (in the normal case, be the same function
> >> with the same arguments) in order to use the index.
> >
> > Yes, so you create a function called complex_ts and create the index:
> >
> > CREATE INDEX ii on x USING GIT(complex_ts(col1, col2))
>
> GIN?
Yes, sorry, GIN.
-- Bruce Momjian <bruce@momjian.us> http://momjian.us EnterpriseDB
http://www.enterprisedb.com
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