The list of all the queries

A large number of triggers

Query goal: Show user-defined triggers if there are more than 9 different trigger routine bodies, i.e., different triggers on different tables that do the same thing count as one trigger.
Query type: General (Overview of some aspect of the database.)
Query license: MIT License
Data source: INFORMATION_SCHEMA+system catalog
SQL query: Click on query to copy it

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))  
SELECT Tr.trigger_schema, trigger_table, action_timing, event_manipulation, action_orientation, action_condition, string_agg(event_object_column::text, ',<br>' ORDER BY event_object_column) AS update_columns, is_constraint_trigger,  is_init_deferred, Tr.trigger_name, routine_name, regexp_replace(routine_definition,'[\r\n]','<br>','g') AS routine_definition
FROM Tr LEFT JOIN  information_schema.triggered_update_columns AS TUC ON Tr.trigger_schema=TUC.trigger_schema AND Tr.trigger_name=TUC.trigger_name AND
 Tr.trigger_table=TUC.event_object_table
WHERE (SELECT Count(DISTINCT routine_definition) AS cnt FROM Tr)>=9
GROUP BY Tr.trigger_schema, Tr.trigger_table, action_timing, event_manipulation, action_orientation, action_condition, is_constraint_trigger,  is_init_deferred, Tr.trigger_name, routine_name, regexp_replace(routine_definition,'[\r\n]','<br>','g')
ORDER BY Tr.trigger_schema, Tr.trigger_table, event_manipulation, action_timing, action_orientation, Tr.trigger_name;

Categories where the query belongs to

Category nameCategory description
AssessmentQueries of this category could be used specifically in the learning environment to assess as to whether student projects have filled certain criteria.
Triggers and rulesQueries of this category provide information about triggers and rules in a database.

The list of all the queries