列出Postgresql数据库中的所有UNLOGGED表

Question

Since version 9.1, PostgreSQL supports the creation of UNLOGGED tables which do not use the WAL and are truncated during any DB recovery. See documentation: create unlogged table

Where does PostgreSQL store the information, whether a relation is UNLOGGED? I am looking for a query to list all relations that are UNLOGGED.

Thanks in advance

Answer 1

It is the relpersistence column of the pg_class catalog:

http://www.postgresql.org/docs/9.1/static/catalog-pg-class.html

Answer 2

https://www.postgresql.org/docs/current/catalog-pg-class.html

select relname, relowner from pg_class where relpersistence='u';