Hello all,
I have a little table o TAs (teach assistants) with the following MySQL
schema:
tbl_NotAvailable {
TAid - int(11)
StartDate - DateTime
EndDate - DataTime
}
This table logs the times where TAs are NOT available. So If a TA is not
available on Monday from 12:00 to Tuesday 13:30 there will
be an entry on his table like (001,2005-08-15 12:00,2005-8-16 13:30)
where 001 is the TA Id.
Question one:
Now, how can I return a calendar of the dates where the TA is AVAILABLE,
that is the oposite of what is recorded?
I want a list of all the available days and times by substracting the
non available times recorded in the table.
I guess I would need to produce a SELECT statement of all the days from
Start to End and exclude those days that
are recorded on the table
What I want is given an interval say 2005-08-01 00:00:00 to 2005-08-31
23:59:00, how can I get a list of all days where there is
no activity based on the records when the TA is not available?
Question two:
I want to make sure a you can book a time on the table that does not
conflict with an existent one. How can I do it?
I've been browsing Joe Celko's book for ideas.
Any thoughts on how to accomplish this?
Thanks in advance,
C.F.
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