with ck as (select 
o.conname,
(select nspname from pg_namespace where oid=c.relnamespace) as target_schema,
c.relname as target_table, 
c.oid as target_table_oid,
unnest(o.conkey) AS target_col,
substring(pg_get_constraintdef(o.oid),7) as consrc
from pg_constraint o inner join pg_class c on c.oid = o.conrelid
where o.contype = 'c'),
ck_names as (select replace(lower(ck.conname), lower(ck.target_table),'T A B L E') as conname_pattern, ck.target_schema, ck.target_table, string_agg(a_target.attname, ', ' ORDER BY a_target.attname) as target_col, ck.consrc
from ck inner join pg_attribute a_target on ck.target_col = a_target.attnum and ck.target_table_oid = a_target.attrelid and a_target.attisdropped = false
group by conname, ck.target_schema, ck.target_table, ck.consrc)
SELECT consrc, string_agg(target_schema || '.' || target_table || '.(' || target_col || ').' || conname_pattern, ',<br>' ORDER BY target_schema, target_table) AS constraints
FROM ck_names
GROUP BY consrc
HAVING Count(DISTINCT conname_pattern)>1
ORDER BY consrc;