Hello, I'm also interested in this topic.
> > I'm also interested in this topic and work on system-time temporal > > extension. Here I wrote down design of my solution few months ago > > https://wiki.postgresql.org/wiki/SQL2011Temporal. The idea is > > basically the same as in your solution with some minor differences. I've added a requirement in the system here: the table to be versioned must have a PK (I dislike _entry_id usage but this sounds good othwise). I then define a "EXCLUDE WITH GIST (pk with =, sys_period with &&)", thus getting expected UNIQUEness also in the history. Vlad, is your source code in a public versionning system (github, bucket, etc) ? It will ease the process to participate to your extension... -- Cédric Villemain +33 (0)6 20 30 22 52 http://2ndQuadrant.fr/ PostgreSQL: Support 24x7 - Développement, Expertise et Formation
