USE vn;
ALTER TABLE vn.invoiceOutTaxConfig MODIFY COLUMN expenseFk varchar(10) CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci DEFAULT NULL NULL;

ALTER TABLE vn.invoiceOutTaxConfig
    ADD CONSTRAINT invoiceOutTaxConfig_expense_FK FOREIGN KEY (expenseFk) REFERENCES vn.expense(id) ON DELETE RESTRICT ON UPDATE CASCADE;