ORA-01843: not a valid month
问题 I am having an issue with my sql query. create table rental ( rental_id NUMBER(5) NOT NULL, rental_date timestamp NOT NULL, inventory_id NUMBER(5) NOT NULL, customer_id NUMBER(5) NOT NULL, return_date timestamp NOT NULL, staff_id NUMBER(5) NOT NULL, constraint rental_primary PRIMARY KEY (rental_id), constraint rental_foreign FOREIGN KEY (inventory_id) REFERENCES inventory(inventory_id), constraint rental_foreign2 FOREIGN KEY (customer_id) REFERENCES customer(customer_id), constraint rental