Currently is not possible to control sort columns for \d* commands. Usually
schema and table name is used. Really often task is collect the most big
objects in database. "\dt+, \di+" shows necessary information, but not in
Instead introduction some additional flags to backslash commands, I propose
a special psql variable that can be used for specification of order used
when some plus command is used.
set EXTENDED_DESCRIBE_SORT size_desc
Possible variants: schema_table, table_schema, size_desc, size_asc