Solved

ASP reservation system with Access DB - Date Range.

Posted on 2009-05-15
2
410 Views
Last Modified: 2012-05-07
I have a reservation system currently built in ASP and Access. Now im trying to build a function to check availablilty of suites on the attempt of a new booking.

For example:
Lets say someone has a reservation for May12th - 13th. If someone else comes along and tries to book May 10th - 20th it will work and overlap the other reservation.

The date range function "BETWEEN" in SQL isnt checking the individual dates of the ranges, simply the range as a whole, so A date range that is smaller and within than the one being inquired about will cause the program to overlap suite bookings.

Is there an efficient way to carry this out?

Thanks in advance.
CRSQL = "SELECT * FROM h_bookinfo WHERE (room_id=" & roomid & ") AND ((#" & checkin &"#  BETWEEN checkin_date and checkout_date AND #" & checkout &"#  BETWEEN checkin_date and checkout_date) OR (#" & checkin &"# <= checkin_date AND #" & checkout &"#  >= checkout_date))"
 
If CRLookup.EOF or CRLookup.BOF Then
		'response.write("Room is not booked")
		checkroom = false
		Else 
		'response.write("Room is booked")
		checkroom = true
		End If

Open in new window

0
Comment
Question by:nomar2
  • 2
2 Comments
 
LVL 44

Accepted Solution

by:
GRayL earned 50 total points
ID: 24398303
I'll leave it to you to get the syntax right but it goes like this:

(checkin_date Not Between checkin AND checkout) OR (checkout_date  Not Between checkin and checkout)
0
 
LVL 44

Expert Comment

by:GRayL
ID: 24495079
Thanks, glad to help.
0

Featured Post

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Introduction The Visual Basic for Applications (VBA) language is at the heart of every application that you write. It is your key to taking Access beyond the world of wizards into a world where anything is possible. This article introduces you to…
Phishing attempts can come in all forms, shapes and sizes. No matter how familiar you think you are with them, always remember to take extra precaution when opening an email with attachments or links.
Familiarize people with the process of utilizing SQL Server stored procedures from within Microsoft Access. Microsoft Access is a very powerful client/server development tool. One of the SQL Server objects that you can interact with from within Micr…
Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…

803 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question