High Performance PostgreSQL for Rails: How to show autovacuum_vacuum_scale_factor per table (p. 171)

@andatki

On page 171, it shows how to change the autovacuum scale factor for a particular table, eg:

ALTER TABLE trips SET (autovacuum_vacuum_scale_factor = 0.01);

It’s also possible to show from in a psql console what the global value is for the scale factor:

SHOW autovacuum_vacuum_scale_factor;

My question is: How to show the table-specific values? i.e. suppose someone else has gone in and updated this for various tables, and you just want to know what all the current values are before making further changes?