On 18 November 2013 07:36, Heikki Linnakangas <hlinnakan...@vmware.com> wrote: > On 14.11.2013 22:10, Simon Riggs wrote: >> >> Includes test extension which allows sequences without gaps - "gapless". > > > I realize this is just for demonstration purposes, but it's worth noting > that it doesn't actually guarantee that when you use the sequence to > populate a column in the table, the column would not have gaps. Sequences > are not transactional, so rollbacks will still produce gaps. The > documentation is misleading on that point. Without a strong guarantee, it's > a pretty useless extension.
True. If I fix that problem, I should change the name to "lockup" sequences, since only one transaction at a time could use the nextval. Should I change the documentation, or just bin the idea? -- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers