postgres8.1、order byで2つ以上カラム指定したい時、最後に指定しなければDESCは効く
order by order_no,expected_date,expected_time DESC
これは効かないが
order by order_no,expected_date DESC,expected_time
これは効く
order by order_no,expected_date,expected_time DESC
これは効かないが
order by order_no,expected_date DESC,expected_time
これは効く