Goal Find base tables that have multiple triggers to update tsvector values.
Type Problem detection (Each row in the result could represent a flaw in the design)
Reliability Low (Many false-positive results)
License MIT License
Data Source system catalog only
SQL Query
WITH Tr AS (SELECT
    n.nspname AS trigger_schema,
    t.tgname AS trigger_name,
    em.text AS event_manipulation,    
    c.relname AS trigger_table,
		p.proname 
   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)
  AND c.relkind IN ('r','p')
  AND p.proname~*'^tsvector_update_trigger')
SELECT Tr.trigger_schema, Tr.trigger_table, Tr.proname, 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.proname  
HAVING Count(DISTINCT Tr.trigger_name)>1
ORDER BY  Tr.trigger_schema, Tr.trigger_table;

Collections

This query belongs to the following collections:

NameDescription
Find problems automaticallyQueries, that results point to problems in the database. Each query in the collection produces an initial assessment. However, a human reviewer has the final say as to whether there is a problem or not .
Categories

This query is classified under the following categories:

NameDescription
Duplication of implementation elementsQueries of this catergory provide information about the duplication of the database objects.
Full text searchQueries of this category provide information about full text search

Further reading and related materials:

Reference
https://www.postgresql.org/docs/current/textsearch-features.html