"Rainer Mager" <rainer@vanten.com> writes:
> So, I need indices that make it fast querying against start_time as well as
> all possible combinations of channel, player, and ad.
There's some general principles in the manual --- have you read
http://www.postgresql.org/docs/8.3/static/indexes.html
especially 11.3 and 11.5?
regards, tom lane