Question

I have two tables

------------------------
|   Vehicles           |
------------------------
+ id                   +
| name                 |
+ available_from_date  +
| available_from_time  |
+ available_to_date    +
| available_to_time    |
-----------------------


------------------------
|   Reserved_Vehicles  |
------------------------
+ id                   +
| vehicle_id           |
+ reserved_from_date   +
| reserved_from_time   |
+ reserved_to_date     +
| reserved_to_time     |
-----------------------

I want to query vehicles table such that I get only those vehicles which meet the availability date and time and also not already reserved for that time.

For example, I want to search vehicles which are available FROM date 2012-07-27 & time 10:00 TO date 2012-08-15 & time 14:00.

How to solve above problem with one query?

Thanks in advance. 🙂

Answer 1

It sounds like you could just use AND in your WHERE clause. Is that not working?

Do you need to query both tables? Or can you safely assume that if a car is reserved at a given time then it’s not available, and if it’s available then it’s not reserved?