PostgreSQL script to list relations between tables

relations-list.sql

SELECT
    tc.constraint_name AS constraint_name,
    tc.table_name AS table_name,
    kcu.column_name AS column_name,
    ccu.table_name AS foreign_table_name,
    ccu.column_name AS foreign_column_name
FROM
    information_schema.table_constraints AS tc
    JOIN information_schema.key_column_usage AS kcu
        ON tc.constraint_name = kcu.constraint_name
    JOIN information_schema.constraint_column_usage AS ccu
        ON ccu.constraint_name = tc.constraint_name
WHERE
    constraint_type = 'FOREIGN KEY';