I am grabbing a printer total and putting it in a table. The page_count is continuously increasing:
page_count_count page_count_pdate 10 2010-05-10 20 2010-05-10 40 2010-05-11 60 2010-05-11 80 2010-05-11 100 2010-05-12 120 2010-05-12 ..... and so on. I can do: select sum(page_count_count) from page_count group by page_count_pdate. and get a total for a day. But this is not the total I want. I want the total page count for the day. This would mean getting the first page count of the day and then subtracting that from last page_count for the day. For 2010-05-11 above it would be 80 - 40 = 40 total for the day. Is there a way to do this with sql? thx, -wes -- Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-sql
