Denis Perchine <dyp(at)perchine(dot)com> writes:
> is it possible to create functional indices with constant params?
> create index ix_s_m on stats(date_part('month', sent_date));
No.
> If it is not possible is there any workarounds for this?
Sure: make your own function that does what you want with no extra
parameters. I don't think an SQL function works as an index function
right now (I may be able to fix that for 7.1, but no promises), but a
plpgsql (or pl-anything) function should work.
regards, tom lane