User-defined non-trigger SQL and PL/pgSQL routines

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Goal This query retrieves a comprehensive list of user-defined routines (functions and procedures) written in SQL or PL/pgSQL. It explicitly filters the result set to exclude:

  • Trigger functions: Routines intended solely for use in triggers are omitted to focus on callable business logic.
  • System schemas: Routines located in system-managed namespaces (e.g., pg_catalog, information_schema) are excluded to isolate user-created code.
  • Extension routines.

The result provides an inventory of the application's explicit, callable database logic.
Notes The query does not consider the routines that are a part of an extension. In the returned body of routine the query replaces each newline character with the line break (br) tag for the better readability in case the query result is displayed in a web browser. There could be multiple routines with the same name but with different parameters in the same schema (overloading). Thus, for the unique identification of the routine it is necessary to present also its parameters in addition to the schema name and routine name.
Type General (Overview of some aspect of the database.)
License MIT License
Data Source INFORMATION_SCHEMA+system catalog
SQL Query 
SELECT 
routine_schema, 
routine_name, 
pg_get_function_identity_arguments(translate(substring(routines.specific_name,'_[0-9]+$'),'_','')::int::oid) AS parameters,
data_type AS return_type, 
is_deterministic, 
routine_type,
security_type,
external_language,
regexp_replace(regexp_replace(pg_get_functiondef(translate(substring(routines.specific_name,'_[0-9]+$'),'_','')::int::oid),'<','<','g'),'[\r\n]','
','g')  AS routine_src
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 external_language IN ('PLPGSQL','SQL') 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)
ORDER BY routine_schema, routine_name, parameters;
Collections

This query belongs to the following collections:

NameDescription
Find problems by overviewQueries 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:

NameDescription
User-defined routinesQueries of this category provide information about the user-defined routines