// DB_DataObject::debugLevel(1);
$c = DB_DAtaObject::factory('core_curr_rate');
$c->whereAdd('from_dt < NOW() AND to_dt > NOW()');
// DB_DataObject::debugLevel(1);
$c = DB_DAtaObject::factory('core_curr_rate');
$c->whereAdd('from_dt < NOW() AND to_dt > NOW()');