On Sun, Feb 28, 2010 at 6:29 PM, John R Pierce <pierce@xxxxxxxxxxxx> wrote: > Szymon Guz wrote: >> >> Different doesn't mean that the id should be greater or lower, rather >> should be different. I'd rather do something like: > > indeed, my code assumed that records were only INSERT'd into table1 and > never UPDATE or DELETE'd. my statement -did- have the advantage of being > fast, at least assuming the id is an index on both tables. if you do > update records, you could use a seperate SERIAL/BIGSERIAL field for this, > which you update on your INSERT's, and use this bigserial for your inserts, > but you'd need a UPSERT kind of function to handle duplicate primary keys. > > checking for deletions will be more difficult and more importantly, more > time consuming as it will likely require multiple full table scans of both > tables. > > > > -- > Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-general > Good stuff. My rows won't change. I wrote a script to do all of the logic in perl but clearly won't be as efficient as what you guys did in 1 line. :) -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
