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
That's not the same case he tested. The single-parameter form of to_tsvector isn't immutable, because it depends on the default text search configuration parameter. It should work, AFAICS, with the two-parameter form.
