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> Datepart function - referencing a quarter    
 
   
scallopdragger
post Mar 20 2006, 12:05 PM
Post #1

UtterAccess Addict
Posts: 160
From: New Scotland, Canada



Hi all:

I would like a formula I have written to indicate which quarter a date fell into. I have attempted to set a date as the first day of the first quarter, but have had no luck.

Here's what I tried:

CODE
IssueQuarter: datepart("q",[IssueDate],1,#01/29/2006#)


It seems to work, except when I aske it to return something that happens on 04/28/06, which should be in Q1, but is being counted in Q2.

Any thoughts?

Thanks,
-sd
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RuralGuy
post Mar 20 2006, 12:21 PM
Post #2

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Posts: 2,442
From: @ 8300' in the Colorado Rocky Mountains



I don't see how your syntax falls into this: DatePart(interval, date[,firstdayofweek[, firstweekofyear]])
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scallopdragger
post Mar 20 2006, 12:38 PM
Post #3

UtterAccess Addict
Posts: 160
From: New Scotland, Canada



Thanks for the feedback.

I just tried:

CODE
IssueQuarter: datepart("q",[IssueDate][,1[,01/29/2006]])


No luck there. Please offer a suggestion, if you know where I am going wrong.

It's appreciated,
-sd
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RuralGuy
post Mar 20 2006, 12:47 PM
Post #4

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Posts: 2,442
From: @ 8300' in the Colorado Rocky Mountains



The firstweekofyear argument has these settings:

Constant Value Description
vbUseSystem 0 Use the NLS API setting.
vbFirstJan1 1 Start with week in which January 1 occurs (default).
vbFirstFourDays 2 Start with the first week that has at least four days in the new year.
vbFirstFullWeek 3 Start with first full week of the year.
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ScottGem
post Mar 20 2006, 12:52 PM
Post #5

UtterAccess VIP / UA Clown
Posts: 25,212
From: LI, NY



Where I think you are going wrong is that the firstweekofyear argument doesn't accept a date. It is used primarily to extract the week. Once you use q as the interval argument, the optional arguments are ignored.

It looks like what you want is to base your quarters on a different scale (i.e. Q1 = Feb-Apr, Q2 = May-Jul, etc.)

For that I beleive you will have to do a custom function.
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scallopdragger
post Mar 20 2006, 01:03 PM
Post #6

UtterAccess Addict
Posts: 160
From: New Scotland, Canada



I don't want to seem obtuse, but...

Is there a way that I can set the NLS API setting? If so how?

-sd
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Humby
post Mar 21 2006, 06:29 AM
Post #7

UtterAccess Member
Posts: 23



Judging by the function you've used there, your year is starting 28 days after the calendar year...so you could simply subtract 28 days from the Issue date to make sure that it's in the right quarter? So

IssueQuarter: datepart("q",[IssueDate]-28)

should work, but

IssueQuarter: datepart("q",DateSerial(year([IssueDate]), month([IssueDate]), day([IssueDate])-28))

will almost definitely work, although I've tested neither one.
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