Craig Ringer <cr...@2ndquadrant.com> writes: > On 26 April 2016 at 14:06, éå¤©è <tianzhouc...@gmail.com> wrote: >> (1) Since each protocol buffer column requires a schema. I am not sure >> where is the best place to store that schema info. Should it be in a >> CONSTRAINT (but I am not able to find the doc referring any custom >> constraint), or should it be in the COMMENT or somewhere else?
> I can't really imagine how you'd do that without adding a new catalog like > we have for enum members. A typmod isn't sufficient since you need a whole > lot more than an integer, and typmods aren't tracked throughout the server > that well. > That'll make it hard to do it with an extension. PostGIS manages to reference quite a lot of schema-like information via a geometry column's typmod. Maybe there's a reason why their approach wouldn't be a good fit for this, but it'd be worth investigating. regards, tom lane -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers