thanks for the help
>What you could do is partition the table so that critical information is
>stored in a smaller table while everything else goes to a larger table.
I was thinking the other way round - maybe I can split the large table by
creating a materialized view. But than I read that it is maybe unnecessary
to create a materialized view because pg
"Materialized views sound a useful workaround, if your database doesn't have
a query cache. If you do have a query cache, then you already effectively
have eager or lazy materialized views (depending on your isolation level):
Just use your normal view (or query) and let the database figure it out."
Quote from Farce Pest in
http://spyced.blogspot.com/2005/05/materialized-views-in-postgresql.html
But later in the same blog it seems to indicate that there is a choice to
either use or not use the query cache of pg.
So I don't know now how this cache works and whether it could help me in
this.
SWK