Solved

Max-Min Data Series

Posted on 2011-02-10
7
436 Views
Last Modified: 2012-05-11
I have couple of clients where their shelter entries/exits that are recorded on a daily bases. The challenge is that I need to calculate length of stay (Max-Min dates) and length of time between shelter visits. I know how to calculate length of stay and time between visits if Client shelter entries are formatted like:

Client   Program     Entry Date    Exit Date
18         Shelter A    8/18/2010     8/22/2010
18         Shelter A    9/2/2010       9/6/2010
19         Shelter A    9/3/2010       9/8/2010

But I’m not sure how to even approach data when drop looks like:

Client   Program     Entry Date    Exit Date
18         Shelter A    8/18/2010     8/19/2010
18         Shelter A    8/19/2010     8/20/2010
18         Shelter A    8/20/2010     8/21/2010
18         Shelter A    8/21/2010     8/22/2010
18         Shelter A    9/2/2010       9/3/2010
18         Shelter A    9/3/2010       9/4/2010
18         Shelter A    9/4/2010       9/5/2010
18         Shelter A    9/5/2010       9/6/2010
19         Shelter A    9/3/2010       9/4/2010
19         Shelter A    9/4/2010       9/5/2010
19         Shelter A    9/6/2010       9/7/2010
19         Shelter A    9/7/2010       9/8/2010

Is there a way to convert date series to max min date by client? Any suggestions are appreciated.

Thanks
0
Comment
Question by:jbakerstull
  • 4
  • 2
7 Comments
 
LVL 51

Expert Comment

by:HainKurt
ID: 34865846
your sample is not clear... do you mean this?

Client   Program     Entry Date    Exit Date
18         Shelter A    8/18/2010     8/22/2010
19         Shelter A    9/3/2010       9/8/2010

0
 

Author Comment

by:jbakerstull
ID: 34865982
Yes, but client 18 left on 8/22/2010 and then would reappeared on 9/2/2010 for a length of time:

So client 18 would have two separate shelter visits:

18         Shelter A    8/18/2010     8/22/2010
18         Shelter A    9/2/2010       9/6/2010
0
 
LVL 120

Accepted Solution

by:
Rey Obrero (Capricorn1) earned 500 total points
ID: 34866203
try this query


SELECT b.Client, b.Program, Min(b.[Entry Date]) AS [MinOfEntry Date], Max(b.[Exit Date]) AS [MaxOfExit Date]
FROM Visit AS b
GROUP BY b.Client, b.Program, Format([Entry Date],"yyyymm"), Format([Exit Date],"yyyymm");
0
Ransomware: The New Cyber Threat & How to Stop It

This infographic explains ransomware, type of malware that blocks access to your files or your systems and holds them hostage until a ransom is paid. It also examines the different types of ransomware and explains what you can do to thwart this sinister online threat.  

 

Author Comment

by:jbakerstull
ID: 34866240
I rank Client Id by using Entry Date to create:

Client   Program     Entry Date      Exit Date      Rank
18         Shelter A    8/18/2010     8/19/2010    1
18         Shelter A    8/19/2010     8/20/2010    2
18         Shelter A    8/20/2010     8/21/2010    3
18         Shelter A    8/21/2010     8/22/2010    4
18         Shelter A    9/2/2010       9/3/2010      1
18         Shelter A    9/3/2010       9/4/2010      2
18         Shelter A    9/4/2010       9/5/2010      3
18         Shelter A    9/5/2010       9/6/2010      4
19         Shelter A    9/3/2010       9/4/2010      1
19         Shelter A    9/4/2010       9/5/2010      2
19         Shelter A    9/6/2010       9/7/2010      3
19         Shelter A    9/7/2010       9/8/2010      4

and then concatenate Client & Rank to create a unique key and then use min, max to identify entries and exits. But I stuck on how many times client should be listed without manually (using countif) listing many times the client appears..  
0
 
LVL 120

Expert Comment

by:Rey Obrero (Capricorn1)
ID: 34866264
try the query i posted
0
 

Author Comment

by:jbakerstull
ID: 34866372
I work off an internet server so its a datapull into excel. It will take me a few minutes to set up a test database..  Please don' t go anywhere.
0
 

Author Comment

by:jbakerstull
ID: 34866463
Tested.. works.. thank you sir.
DateTest.accdb
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

In a multiple monitor setup, if you don't want to use AutoCenter to position your popup forms, you have a problem: where will they appear?  Sometimes you may have an additional problem: where the devil did they go?  If you last had a popup form open…
Overview: This article:       (a) explains one principle method to cross-reference invoice items in Quickbooks®       (b) explores the reasons one might need to cross-reference invoice items       (c) provides a sample process for creating a M…
This Micro Tutorial will demonstrate the scrolling table in Microsoft Excel using the INDEX function.
Access reports are powerful and flexible. Learn how to create a query and then a grouped report using the wizard. Modify the report design after the wizard is done to make it look better. There will be another video to explain how to put the final p…

808 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