fuck off, I call that a day.

migrations/create_tables_001.sql

@@ -65,15 +65,18 @@ CREATE TABLE IF NOT EXISTS cashed_cheques
 (
     id                  INTEGER PRIMARY KEY AUTOINCREMENT,
     drawer_user_id      INTEGER NOT NULL,
-    drawer_account_id   INTEGER,
+    drawer_account_id   INTEGER NOT NULL,
     cheque_number       INTEGER NOT NULL,
     amount              INTEGER NOT NULL,
     underlying_security INTEGER NOT NULL,
+    payee_user_id       INTEGER NOT NULL,
+    payee_account_id    INTEGER NOT NULL,
     creation_time       DATETIME DEFAULT CURRENT_TIMESTAMP,
 
-
     FOREIGN KEY (underlying_security) REFERENCES securities (id),
     FOREIGN KEY (drawer_user_id) REFERENCES users (id),
     FOREIGN KEY (drawer_account_id) REFERENCES accounts (id),
+    FOREIGN KEY (payee_user_id) REFERENCES users (id),
+    FOREIGN KEY (payee_account_id) REFERENCES accounts (id),
     CONSTRAINT double_spending UNIQUE (drawer_user_id, cheque_number) -- no double spending
 );