ALTER TABLE recurly_transaction_web_hooks ADD COLUMN admin_description VARCHAR; ALTER TABLE recurly_transaction_web_hooks ADD COLUMN jam_track_id VARCHAR(64) REFERENCES jam_tracks(id); CREATE VIEW payment_histories AS SELECT id AS sale_id, CAST(NULL as VARCHAR) AS recurly_transaction_web_hook_id, user_id, created_at, 'sale' AS transaction_type FROM sales s UNION ALL SELECT CAST(NULL as VARCHAR) AS sale_id, id AS recurly_transaction_web_hook_id, user_id, transaction_at AS created_at, transaction_type FROM recurly_transaction_web_hooks;