Refers to the column pg_proc.prokind and thus works starting from PostgreSQL 11. 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. The query does not consider the routines that are a part of an extension. The query only considers a subset of keywords that are widely used in routines that are used for data management. The query does not consider routines with SQL-standard bodies, which are permitted starting from PostgreSQL 14. Such a routine is parsed at routine definition time, and the keywords are changed to uppercase at that time. The query tries to prevent false negatives if the text is a part of one-line comment or a string that is used in the routine.
Type
Problem detection (Each row in the result could represent a flaw in the design)
SELECT pg_namespace.nspname AS routine_schema, pg_proc.proname AS routine_name,
pg_get_function_identity_arguments(pg_proc.oid) AS parameters,
CASE WHEN pg_proc.prokind='f' THEN 'FUNCTION'
WHEN pg_proc.prokind='p' THEN 'PROCEDURE'
WHEN pg_proc.prokind='a' THEN 'AGGREGATE FUNCTION'
WHEN pg_proc.prokind='w' THEN 'WINDOW FUNCTION' END AS routine_type,
regexp_replace(pg_proc.prosrc,'[\r\n]',' ','g') AS routine_src
FROM pg_catalog.pg_proc, pg_catalog.pg_namespace
WHERE pg_proc.pronamespace = pg_namespace.oid AND
pg_proc.proname NOT IN ('f_assume_you_must_use_files', 'f_check_format_comma_separated_list', 'f_check_password', 'f_default_value_with_no_match') AND
pg_namespace.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 NOT EXISTS (SELECT 1
FROM pg_catalog.pg_depend d
WHERE EXISTS (SELECT 1 FROM pg_catalog.pg_extension e WHERE d.refobjid=e.oid) AND
d.objid=pg_proc.oid) AND
(
(pg_proc.prosrc~*'(?