Task: Text to Code
Input (English): Step 1: For each row in Invoices table, find the corresponding rows in Shipments table.
Step 2: find order_id of the results of step 1 whose invoice_date greater than 2000-01-01
Output (English): SELECT T2.order_id FROM Invoices AS T1 JOIN Shipments AS T2 ON T1.invoice_number = T2.invoice_number WHERE T1.invoice_date > "2000-01-01"