Hi, On 2017-02-20 11:44:58 +0100, Adam Dratwiński wrote: > Hello everyone, > > I am writing a custom logical replication decoder, and I took test decoder > from Postgres sources as an example. > > Could anyone tell me how to read "unchanged toast datum" in case it is > VARTT_IS_EXTERNAL_ONDISK.
You can't by default. It's simply not available data - we'd have to log a lot more data to make that fully available. If you change the replica identity settings to FULL, the full old data (including toasted data) will be logged. Regards, Andres -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers