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Finding out number of weeks by date range

Posted on 2006-07-23
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Last Modified: 2013-12-24
I have a record with a date range.  Is there a way to determine the number of weeks that is included in the date range?
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Question by:moyedokun
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6 Comments
 
LVL 11

Expert Comment

by:adonis1976
ID: 17165057
Say for example you have a record like 07/23/2006-07/20/2006

You can do something like this:

<cfset sDate = "07/23/2006-07/20/2006"

<cfset iWeeks = datediff(ww,listLast(sDate),listFirst(sDate))>

iWeeks should give you the difference in weeks..
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LVL 13

Assisted Solution

by:usachrisk1983
usachrisk1983 earned 1600 total points
ID: 17167364
Slight modification to one of your lines:

<cfset iWeeks = datediff(ww,listLast(sDate),listFirst(sDate))>

should be

<cfset iWeeks = datediff(ww,listLast(sDate,'-'),listFirst(sDate,'-'))>

If the data is stored as "07/23/2006-07/20/2006"

This is because both ListFirst and ListLast will be looking for a comma as a delim, and when it doesn't find one, will assume it's just a one item list.
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LVL 11

Expert Comment

by:adonis1976
ID: 17168108
yep sir.. agree with you.. i was asleep when I wrote that code..
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Author Comment

by:moyedokun
ID: 17189930
I get an error.  It is telling me that ww is undefined.
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LVL 15

Accepted Solution

by:
tim_cs earned 400 total points
ID: 17190916
Just need to put the ww between quotes

datediff("ww",   etc...
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LVL 25

Expert Comment

by:dgrafx
ID: 17225702
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