If I understand this, it looks like this approach allows me to match the beginnings and endings of words, but not the middle sections. Is that correct? That is, if I search for "jag" I will find "jaeger" but not "lobenjager".
Or am I (again) not understanding how this works?
TIA,
Matt
On Sun, Jan 30, 2011 at 9:59 AM, Matt Warner
<matt@warnertechnology.com> wrote:
Aha! Thanks for pointing that out. It's indexing now.
Thanks!
Matt
On Sun, Jan 30, 2011 at 9:12 AM, Tom Lane
<tgl@sss.pgh.pa.us> wrote:
Matt Warner <
matt@warnertechnology.com> writes:
> Doesn't seem to work either. Maybe something changed in 9.1?
> create index test_idx on testtable using gin(to_tsvector(wordcolumn||'
> '||reverse(wordcolumn)));
> ERROR: functions in index expression must be marked IMMUTABLE
to_tsvector isn't immutable, because it depends on the default text
search configuration parameter. It should work, AFAICS, with the
two-parameter form.
regards, tom lane