Anand, VJ (MED, GEMS-IT) kirjutas K, 03.12.2003 kell 18:18:
> Hello:
>
> I am trying to find out, how is the B-tree index implemented for
> multiple columns? does Postgres, just
> concatenate the columns ---
Yes.
> if this is the case, then how is the
> search performed? Also,
Hello:
I am trying to find out, how is the B-tree index implemented for
multiple columns? does Postgres, just
concatenate the columns --- if this is the case, then how is the
search performed? Also, does the optimizer
choose the index, only when the constraining is
