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Question

I'm trying to come up with a way to query within a list of time ranges, to assign jobs to different people according to their availability.

So I'm imaging a table stored in MYSQL:

Person       | Available (day) | Available (hours) | Free (from) | Free (until)
Mateluna     | Monday          | 10:00 - 13:00     | 10:00       | 13:00
Mateluna     | Monday          | 15:00 - 19:00     | 15:00       | 19:00
DelloStritto | Tuesday         | 12:00 - 18:00     | 12:00       | 18:00
DeFranco     | Monday          | 10:00 - 11:30     | 10:00       | 11:30
Richardson   | Monday          | 08:00 - 10:30     | 08:00       | 10:30

* Where Free (from) and Free (until) would be generated from the Available (hours)

The idea is that I could create a form that would query the table with parameters like "Monday" & "10:00 - 11:30" and the function would return DeFranco and Mateluna. From what I can think of, it would involve having to do a search within "Available (day)" and to be able to search within the "Available (hours)" time ranges - which I do not know how to do or sure if is possible.

At the moment I could create something that works, but it comes out to be more generic, eg. I can search for "Monday" and see all people available on Mondays and then I'd have to look through the output list to find the people who fit my needs, eg.

Mateluna @ 10:00 - 13:00
DeFranco @ 10:00 - 11:30
Richardson @ 08:00 - 10:30

Any help, much appreciated on how I could approach this problem, I have a feeling it might involve having to store the information differently, but I'm not sure.

Answer 1

I think for your purpose you can use the 'AND' or 'joins' in the query.... for example

select * from db_name where available(day) =%s AND available hours between %s and %s;