select_all_fk.sql

SELECT
    tc.constraint_name, tc.table_name, kcu.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
    join information_schema.tables t on t.table_name = tc.table_name
WHERE constraint_type = 'FOREIGN KEY' and t.table_schema in ('main', 'proxy')
ORDER BY tc.table_name, ccu.table_name;