Sample output that appears below the table attributes for \d:

Indicies: palm_buy_date_idx
          palm_user_date_idx
Primary Key: palm_buyers_pkey
Unique Key: palm_buyers_username
Constraint: "$1" ((sex = 'M'::bpchar) OR (sex = 'F'::bpchar))

Note that check constraint name now shown as well.  (Makes it a lot easier
to test inheritance support in ADD/DROP constraint :) )

Attached is a docs change for psql.

Christopher Kings