On 30 September 2016 at 04:15, Emrul <em...@emrul.com> wrote: > Hi, > > I'm working on an idea to implement a graph database in Postgres. At the > moment its just a learning exercise. > > What I'd like to do is store a reference to all the links from one record > using an array type that stores links to all related tables. > > At first, I've succeeded in doing this using primary key Ids and this works > fine. However, I'd like to be able to bypass the index lookup altogether by > storing the ctids in my array instead of the primary key ids. > > Trouble of course is that ctids can get changed (like for instance > vacuuming). So my question is: how can I keep my ctid references up to date > - is there any way to detect when a ctid is changed?
I expect that you'd have to teach the heapam code, vacuum, etc to do the required housekeeping. -- Craig Ringer 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