Ron Mayer wrote:
One use case that I think GIT would help a lot with are my large address tables that are clustered by zip-code but often queried by State, City, County, School District, Police Beat, etc.
Yep, GIT would shrink the index on zip-code tremendously...
I imagine a GIT index on "state" would just occupy a couple pages at most regardless of how large the table gets.
.. Not quite that much, though. GIT still stores one index pointer per heap page even on a fully clustered table. Otherwise it's not much good for searches.
And likewise, even an index on City would be orders of magnitude smaller than the existing ones; since all records for any given city are all on the same few disk pages.
Yep, it would help with that as well. -- Heikki Linnakangas EnterpriseDB http://www.enterprisedb.com -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
