Re: Move pg_attribute.attcompression to earlier in struct for reduced size?

On Wed, May 26, 2021 at 11:13 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> * As things stand here, once you've applied ALTER ... SET COMPRESSION
> to select a specific method, there is no way to undo that and go
> back to the use-the-default setting.  All you can do is change to
> explicitly select the other method.  Should we invent "ALTER ...
> SET COMPRESSION default" or the like to cover that?  (Since
> DEFAULT is a reserved word, that exact syntax might be a bit of
> a pain to implement, but maybe we could think of another word.)

Yes. Irreversible catalog changes are bad.

-- 
Robert Haas
EDB: http://www.enterprisedb.com