insert into pg_attribute

attrelid,'conincluding', atttypid, attstattarget, attlen,25, attndims, attcacheoff, atttypmod, attbyval, attstorage, attalign, attnotnull, atthasdef, attisdropped, attislocal, attinhcount, attcollation, attacl, attoptions, attfdwoptions

from pg_attribute

where attrelid='pg_constraint'::regclass::oidand attname='conkey';

select relnatts=25 from pg_class where relname='pg_constraint';