Re:Pgroll: zero-downtime, undoable, schema migrations for Po...
by dkubb on Tuesday October 03, 2023 @04:29PM
(#37757116)
I mentally change schema to namespace when thinking about the postgresql feature.
Re:Pgroll: zero-downtime, undoable, schema migrations for Po...
by guffins on Tuesday October 03, 2023 @04:41PM
(#37757256)
You’re not alone. That’s also how PostgreSQL itself thinks about schemas! https://www.postgresql.org/docs/current/catalog-pg-namespace...
In order to access either the old or new version of the schema, applications should configure the Postgres `search_path`[0] which determines which schema and hence which views of the underlying tables they see.
This is touched on in the documentation here[1], but could do with further expansion.
[0] - https://www.postgresql.org/docs/current/ddl-schemas.html#DDL... [1] - https://github.com/xataio/pgroll/blob/main/docs/README.md#cl...