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Editorial Team
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Asked: 2026-05-16T22:21:59+00:00

I have a mysql table with users and their weekly calendar. Every user can

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I have a mysql table with users and their weekly calendar.

Every user can set his own availability for the week (morning, afternoon, night / MON thru SAT), and that is not going to change often, almost never.

Imagine those users are personal trainers in a gym, or tennis courts you can book…

My problem here is to find the right query (or maybe even rethinking the way i’m storing that data in mysql) in order for an external web user to check availability of them based on 3 check buttons [o]morning, [o]afternoon, and [o]night

So I want my web user to go to my website and check/uncheck those buttons in order to see which one (personal trainer, or whatever) is available

So if I check Morning i can see only the people available, also (but not only), in the morning,(because a personal trainer can be available during the morning but also in the afternoon etc..)..

it may sounds an easy problem but i’m having hard time…

any help is appreciated

Thanks!

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1 Answer

  1. Editorial Team

    This isn’t really an algorithm question, this is more of a DBA question. You’d most likely have a user table and an availability table. 

    user:
    userid
    ...

availability:
    userid
    day
    timeofday

    When given a query such as Monday Wednesday Morning Afternoon (assuming the relationship is (Monday OR Wednesday) AND (Morning OR Afternoon)) you can do a query such as.

    SELECT userid FROM availability WHERE day='wednesday' OR day is 'monday' AND timeofday='morning' OR timeofday='afternoon'
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