how to generate a data set then join with in on fly?

[Ryan Liu]

Hi,

In MySQL, is that possible to generate a data set join with it on fly (without 
create an temporary table)?

e.g. for a report used by a graphic tool, it requires data in all dates, even 
it 
is null. Can I

select vacationT.* left join ( all dates d in the past 3 years) on 
vacationT.`date` = d  ?

Thanks,
Ryan