On Sun, Aug 29, 2021 at 11:59 PM PG Doc comments form < nore...@postgresql.org> wrote:
> The following documentation comment has been logged on the website: > > Page: https://www.postgresql.org/docs/13/datatype.html > Description: > > I'd like to see a fourth column added to Table 8-1 that contains the size > or > size range of the data type. I would argue this is sufficiently provided by the pg_attribute catalog's attlen and attalign fields, as pointed to on the same page linked below. Maybe a note about the amount of space in the > row that a NULL column uses vs a NOT NULL. > > Implementation detail that is covered in the internals section: https://www.postgresql.org/docs/current/storage-page-layout.html#STORAGE-TUPLE-LAYOUT David J.
