Polymorphic routines

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Goal Find routines that have a parameter (input or output) that can have values from different types. This parameter has one of the PostgreSQL polymorphic types. The set of polymorphic types in PostgreSQL is a proper subset of its pseudo-types. The use of such a parameter allows a single routine definition to operate on many different data types, with the specific data type(s) being determined by the data types actually passed to it in a particular call.
Type General (Overview of some aspect of the database.)
License MIT License
Data Source INFORMATION_SCHEMA+system catalog
SQL Query 
SELECT 
  pg_namespace.nspname AS routine_schema, 
  pg_proc.proname AS routine_name, 
   pg_get_function_identity_arguments(pg_proc.oid) AS parameters,
  regexp_replace(pg_get_functiondef(pg_proc.oid),'[\r\n]','
','g')  AS routine_src,
  pg_type.typname AS function_return_type,
CASE WHEN pg_proc.prokind='f' THEN 'FUNCTION'
WHEN pg_proc.prokind='p' THEN 'PROCEDURE'
WHEN pg_proc.prokind='w' THEN 'WINDOW FUNCTION' END AS object_type,
pg_language.lanname AS language
FROM pg_catalog.pg_proc INNER JOIN pg_catalog.pg_namespace ON pg_proc.pronamespace = pg_namespace.oid
INNER JOIN pg_catalog.pg_language ON pg_proc.prolang = pg_language.oid 
LEFT JOIN pg_catalog.pg_type  ON pg_proc.prorettype = pg_type.oid
WHERE (EXISTS (SELECT 1 FROM
 information_schema.parameters AS p
 WHERE p.specific_schema=pg_namespace.nspname 
 AND regexp_replace(specific_name,'_[0-9]*$','')=pg_proc.proname 
 AND p.data_type LIKE 'any%')
OR pg_type.typname LIKE 'any%')
AND pg_proc.prokind<>'a'
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)
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
Comfortability of data managementQueries of this category provide information about the means that have been used to make the use or management of database more comfortable and thus, more efficient.
Data typesQueries of this category provide information about the data types and their usage.
Does not work in some earlier PostgreSQL versionQueries of this category provide information that was not available in some earlier PostgreSQL version
User-defined routinesQueries of this category provide information about the user-defined routines