SELECT n.nspname AS schema_name
      ,p.proname AS function_name
      ,pg_get_functiondef(p.oid) AS func_def
      ,pg_get_function_arguments(p.oid) AS args
      ,pg_get_function_result(p.oid) AS result
FROM   pg_proc p
JOIN   pg_namespace n ON n.oid = p.pronamespace
WHERE  p.proname ILIKE 'func_name%';
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