Lutischán Ferenc wrote:
It is possible to make an index on the table, and make a seq index scan on this values?
My understanding is that this isn't possible in PostgreSQL, because indexes do not contain information about tuple visibility. Data read from the index might refer to tuples that've been deleted as far as your transaction is concerned, or to tuples that were created after your snapshot was taken.
-- Craig Ringer -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
