Untitled

SELECT invoice_date
FROM invoice
WHERE EXTRACT(MONTH FROM CAST(invoice_date AS timestamp)) IN('0',
                                                             '1',
                                                             '2',
                                                             '3',
                                                             '4',
                                                             '5',
                                                              '6',
                                                              '7',
                                                              '8',
                                                              '9',
                                                              '10',
                                                              '11');