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WITH Tr AS (SELECT
    n.nspname AS trigger_schema,
    t.tgname AS trigger_name,
    em.text AS event_manipulation,        
    c.relname AS trigger_table, 
    np.nspname AS routine_schema,
    p.proname AS routine_name,
     p.prosrc AS routine_definition,
     (SELECT DISTINCT action_condition FROM INFORMATION_SCHEMA.triggers AS it WHERE it.trigger_schema=n.nspname AND it.event_object_table=c.relname AND it.trigger_name=t.tgname) AS action_condition,    
        CASE t.tgtype::integer & 1
            WHEN 1 THEN 'ROW'
            ELSE 'STATEMENT'
        END AS action_orientation,
        CASE t.tgtype::integer & 66
            WHEN 2 THEN 'BEFORE'
            WHEN 64 THEN 'INSTEAD OF'
            ELSE 'AFTER'
        END AS action_timing,
	EXISTS (SELECT 1 FROM pg_constraint AS c WHERE c.oid=t.tgconstraint AND c.contype='t') AS is_constraint_trigger,
	 t.tginitdeferred AS is_init_deferred
   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)),
rules AS (SELECT 
  r.definition
FROM 
  pg_catalog.pg_rules r, 
  pg_catalog.pg_namespace n, 
  pg_catalog.pg_authid u
WHERE 
  r.schemaname = n.nspname AND
  n.nspowner = u.oid AND 
 (n.nspname = 'public' OR u.rolname <> 'postgres')
 AND r.definition!~'DO[[:space:]]+INSTEAD[[:space:]]+NOTHING')  
SELECT 'Too few triggers/rules, must be at least three - triggers/rules that do the same thing are counted as one.' As comment, 
(SELECT Count(DISTINCT routine_definition) AS cnt FROM Tr)+(SELECT Count(DISTINCT definition) AS cnt FROM rules) AS the_number_of_tasks
WHERE (SELECT Count(DISTINCT routine_definition) AS cnt FROM Tr)+(SELECT Count(DISTINCT definition) AS cnt FROM rules)<3;