Hi
I have a database which logs the usage of rooms. Some booking are entered
well in advance, and some have stays of more than six months.
I would like to ensure that rooms which have been booked cannot be booked
again, i.e. cannot be booked in that date range
Any help will be much appreciated
Grant
4  2445 
"Grant" <ja*********@ho tmail.com> wrote in message
news:c0******** **@dulnain.stir .ac.uk... Hi
I have a database which logs the usage of rooms. Some booking are entered
well in advance, and some have stays of more than six months.
I would like to ensure that rooms which have been booked cannot be booked
again, i.e. cannot be booked in that date range
Take a look at this post http://groups.google.com/groups?selm...%40news2.calga
ry.shaw.ca&rnum =7
If that doesn't do it for you, search this newsgroup on Google for posts
by that articles author using reservations as a key word.
"rkc" <rk*@yabba.dabb a.do.rochester. rr.bomb> wrote in message
news:ba******** ***********@twi ster.nyroc.rr.c om...
"Grant" <ja*********@ho tmail.com> wrote in message
news:c0******** **@dulnain.stir .ac.uk... Hi
I have a database which logs the usage of rooms. Some booking are
entered well in advance, and some have stays of more than six months.
I would like to ensure that rooms which have been booked cannot be
booked again, i.e. cannot be booked in that date range
Take a look at this post
http://groups.google.com/groups?selm...%40news2.calga ry.shaw.ca&rnum =7
Isn't that a beautifully simple solution? Exactly the sort of thing that
reminds me I'll never make it as a mathematician. I'm the one that would
have ended up with a
If ...then
If...then
If then
nested to umpteen levels.
Mike, et al.
Available rooms is an outer join between booking dates and rooms. You need
a rooms table, a booking dates table and an intersection entity that lists
booked dates/rooms. Then it's an easy bit of SQL looking for dates in
booked dates/rooms by room where date is null for the requested dates.
Similar SQL can present to the requester the available dates/rooms.
I did a sample db some time ago which demonstrated this and could do it
again if there is interest. It'd be a fun weekend project.
"Mike MacSween" <mi************ ***********@bti nternet.com> wrote in message
news:40******** **************@ news.aaisp.net. uk... "rkc" <rk*@yabba.dabb a.do.rochester. rr.bomb> wrote in message
news:ba******** ***********@twi ster.nyroc.rr.c om...
"Grant" <ja*********@ho tmail.com> wrote in message
news:c0******** **@dulnain.stir .ac.uk... Hi
I have a database which logs the usage of rooms. Some booking are entered well in advance, and some have stays of more than six months.
I would like to ensure that rooms which have been booked cannot be booked again, i.e. cannot be booked in that date range
Take a look at this post
http://groups.google.com/groups?selm...%40news2.calga ry.shaw.ca&rnum =7
Isn't that a beautifully simple solution? Exactly the sort of thing that
reminds me I'll never make it as a mathematician. I'm the one that would
have ended up with a
If ...then
If...then
If then
nested to umpteen levels.
Thanks Mike and Alan
Hope the interest is there for your 'weekend project' Alan
Grant
"Alan Webb" <kn*****@hotmai l.com> wrote in message
news:7q******** ********@news.u swest.net... Mike, et al.
Available rooms is an outer join between booking dates and rooms. You
need a rooms table, a booking dates table and an intersection entity that lists
booked dates/rooms. Then it's an easy bit of SQL looking for dates in
booked dates/rooms by room where date is null for the requested dates.
Similar SQL can present to the requester the available dates/rooms.
I did a sample db some time ago which demonstrated this and could do it
again if there is interest. It'd be a fun weekend project.
"Mike MacSween" <mi************ ***********@bti nternet.com> wrote in
message news:40******** **************@ news.aaisp.net. uk... "rkc" <rk*@yabba.dabb a.do.rochester. rr.bomb> wrote in message
news:ba******** ***********@twi ster.nyroc.rr.c om...
"Grant" <ja*********@ho tmail.com> wrote in message
news:c0******** **@dulnain.stir .ac.uk...
> Hi
>
> I have a database which logs the usage of rooms. Some booking are
entered > well in advance, and some have stays of more than six months.
>
> I would like to ensure that rooms which have been booked cannot be
booked > again, i.e. cannot be booked in that date range
Take a look at this post
http://groups.google.com/groups?selm...%40news2.calga ry.shaw.ca&rnum =7
Isn't that a beautifully simple solution? Exactly the sort of thing that
reminds me I'll never make it as a mathematician. I'm the one that would
have ended up with a
If ...then
If...then
If then
nested to umpteen levels.
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