Find trigger names that are used in a database in more than one schema. Different things should have different names. But here different triggers have the same name. Also make sure that this is not a duplication.
Notes
In case of the string_agg function, the line break (br) tag is used as a part of the separator for the better readability in case the query result is displayed in a web browser.
Type
General (Overview of some aspect of the database.)
WITH triggers AS (SELECT tgname AS trigger_name,
nspname AS trigger_schema,
c.relname as table_name
FROM pg_trigger t INNER JOIN pg_class c ON t.tgrelid=c.oid
INNER JOIN pg_namespace n ON c.relnamespace=n.oid
WHERE nspname NOT IN (SELECT schema_name
FROM INFORMATION_SCHEMA.schemata
WHERE schema_name<>'public' AND
schema_owner='postgres' AND schema_name IS NOT NULL)
AND tgisinternal='f')
SELECT trigger_name, Count(*) AS number_of_occurrences, Count(DISTINCT trigger_schema) AS number_of_different_schemas, string_agg(trigger_schema || '.' || table_name, '; ' ORDER BY trigger_schema, table_name) AS tables
FROM triggers
GROUP BY trigger_name
HAVING Count(*)>1 AND Count(DISTINCT trigger_schema)>1
ORDER BY Count(*) DESC, trigger_name;
Collections
This query belongs to the following collections:
Name
Description
Find problems by overview
Queries that results point to different aspects of database that might have problems. A human reviewer has to decide based on the results as to whether there are problems or not .
Categories
This query is classified under the following categories:
Name
Description
Comfortability of database evolution
Queries of this category provide information about the means that influence database evolution.
Duplication of implementation elements
Queries of this catergory provide information about the duplication of the database objects.
Naming
Queries of this category provide information about the style of naming.
Triggers and rules
Queries of this category provide information about triggers and rules in a database.