WITH Tr AS (SELECT
    n.nspname AS trigger_schema,
    t.tgname AS trigger_name,
    em.text AS event_manipulation,
    CASE WHEN c.relkind IN ('r','p') THEN 'BASE TABLE'
    WHEN c.relkind='v' THEN 'VIEW'
    WHEN c.relkind='f' THEN 'FOREIGN TABLE' END AS table_type,
    c.relname AS trigger_table    
   FROM pg_namespace n,
    pg_class c,
    pg_trigger t,
    pg_proc p,
    pg_namespace np,
    ( VALUES (4,'INSERT'), (8,'DELETE'), (16,'UPDATE'), (32,'TRUNCATE')) em(num, text)
  WHERE n.oid = c.relnamespace 
  AND c.oid = t.tgrelid 
  AND t.tgfoid=p.oid
  AND p.pronamespace=np.oid
  AND (t.tgtype::integer & em.num) <> 0 
  AND NOT t.tgisinternal 
  AND NOT pg_is_other_temp_schema(n.oid))
SELECT Tr.trigger_schema, Tr.trigger_table, Tr.table_type, Count(DISTINCT Tr.trigger_name) AS number_of_triggers,
string_agg(Tr.event_manipulation,',' ORDER BY Tr.event_manipulation) AS events
FROM Tr
GROUP BY  Tr.trigger_schema, Tr.trigger_table, Tr.table_type 
ORDER BY  Tr.trigger_schema, Tr.trigger_table;