-- https://docs.oracle.com/en/database/oracle/oracle-database/23/sqlrf/Sequence-Pseudocolumns.html
INSERT INTO orders (order_id, order_date, customer_id)
  VALUES (orders_seq.nextval, TO_DATE(SYSDATE), 106);
INSERT INTO order_items (order_id, line_item_id, product_id)
  VALUES (orders_seq.currval, 1, 2359);
INSERT INTO order_items (order_id, line_item_id, product_id)
  VALUES (orders_seq.currval, 2, 3290);
INSERT INTO order_items (order_id, line_item_id, product_id)
  VALUES (orders_seq.currval, 3, 2381);