Find the number of user-defined non-trigger routines based on their schema, language, and routine type. The routines can be used to implement virtual data layer. Thus the queriy gives some indications about the possible extent of the layer.
Notes
The query only returns data about schemas that have at least one routine. The query excludes routines that are a part of an extension. ROLLUP ensures that the number of routines based on some combinations of the properties and the total number of routines is found.
Type
Sofware measure (Numeric values (software measures) about the database)
WITH routines AS (
SELECT
routine_schema,
coalesce(routine_type,'OTHER') AS routine_type,
external_language
FROM
information_schema.routines
WHERE routine_schema NOT IN (SELECT schema_name
FROM INFORMATION_SCHEMA.schemata
WHERE schema_name<>'public' AND
schema_owner='postgres' AND schema_name IS NOT NULL) AND (data_type<>'trigger' OR data_type IS NULL)
AND routine_name NOT IN ('f_assume_you_must_use_files', 'f_check_format_comma_separated_list', 'f_check_password', 'f_default_value_with_no_match')
AND NOT EXISTS (SELECT 1
FROM pg_catalog.pg_depend d inner join pg_catalog.pg_proc pc ON d.objid=pc.oid
WHERE EXISTS (SELECT 1 FROM pg_catalog.pg_extension e WHERE d.refobjid=e.oid) AND
pc.proname || '_' || pc.oid = routines.specific_name))
SELECT routine_schema, routine_type, external_language, Count(*) AS cnt
FROM routines
GROUP BY cube (routine_schema, routine_type, external_language)
ORDER BY routine_schema, routine_type, external_language, Count(*) DESC;
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 .
Find quick numeric overview of the database
Queries that return numeric values showing mostly the number of different types of database objects in the database
Categories
This query is classified under the following categories:
Name
Description
User-defined routines
Queries of this category provide information about the user-defined routines