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Focal Point    Focal Point Forums  Hop To Forum Categories  WebFOCUS/FOCUS Forum on Focal Point     [SOLVED] DATEDIF I've tried but now need help with Calculating # of Business Days

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[SOLVED] DATEDIF I've tried but now need help with Calculating # of Business Days
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Jeff_Rowland
Gold member
posted
Hi,
Been working on this for a few days but now at the point need some fresh ideas on how to proceed!

1. Requirement: Calculate the total # of business days between two dates (inclusive of start date ) i.e.
Total # of business days between Mon - Fri would be 5.

2. SET COMMANDS
BUSDAYS = _MTWTF_
HDAY = FY09 (Have holiday file set up with the Federal Holidays for 2007 - 2010)

3. Problem:
Using the function DATEDIF(from_date,to_date,'BD') returns 4 as the # of business days for a
Monday-Friday time period.

Example:

DATEDIF(04/20/2009,04/24/2009,'BD') = 4. For my requirment I need to show 5 total business days.


4. Possible Solution:
As a possible solution I modify the above funtion to read:

DATEDIF(04/20/2009,04/24/2009,'BD) +1 In this example the function returned: 5


5. Problem (cont). When executing using the following dates the function returns 6 Business days instead of 5 business days.

DATEIF(04/20/2009,04/25/2009)

This message has been edited. Last edited by: Jeff_Rowland,


7.7.02 Windows7
HTML/Excel/PDF
 
Posts: 66 | Registered: April 16, 2008Report This Post
Tom Flynn
Expert
posted Hide Post
Jeff,

Your Holiday file is in YYYYMMDD format, "hopefully", and, your DATEDIF pramaeters are in MM/DD/YYYY format.

Make them the same, YYYYMMDD...

DATEDIF('20090420', '20090425', 'BD')

Just a thought...

Tom


Tom Flynn
WebFOCUS 8.1.05 - PROD/QA
DB2 - AS400 - Mainframe
 
Posts: 1972 | Location: Centennial, CO | Registered: January 31, 2006Report This Post
<JG>
posted
Jeff Your dates are in SMARTDATE formmat and not a legacy format aren't they?
 
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j.gross
Virtuoso
posted Hide Post
DATEDIF() counts the start-date but not the end-date

For example, I get
Sun to Thu = 3 business days [M T W],
Tue to Sat = 4 business days [T W Th F].

-- So just extend the range by one day (add 1 to the end-date).


- Jack Gross
WF through 8.1.05
 
Posts: 1925 | Location: NYC | In FOCUS since 1983 | Registered: January 11, 2005Report This Post
Jeff_Rowland
Gold member
posted Hide Post
quote:
YYYYMMDD...

I'm a little confused when it comes to SmartDATE vs Legacy format.

Here is what I'm trying to use to test the calculation for Business days

SET HDAY = FY09 Holiday file format YYYYMMDD
SET BUSDAYS = _MTWTF_
DT5/YYYYMD='20090420'
DT6/YYYYMD='20090424'
DT7/YYYYMD='20090420'
DT8/YYYYMD='20090425'

TRNG_DAYS1/I5=(DATEDIF(DT5, DT6, 'BD'))+1;
TRNG_DAYS2/I5=(DATEDIF(DT7, DT8, 'BD'))+ 1;

When I execute I get the following results

TRNG_DAYS1=5 Which is what I want
TRNG_DAYS2=6 This should equal 5 since 04/25/09 is a Saturday.


7.7.02 Windows7
HTML/Excel/PDF
 
Posts: 66 | Registered: April 16, 2008Report This Post
j.gross
Virtuoso
posted Hide Post
Did we cross in the mail?

What I'm suggesting is
... =DATEDIF(DT5, DT6+1, 'BD');
 
Posts: 1925 | Location: NYC | In FOCUS since 1983 | Registered: January 11, 2005Report This Post
Francis Mariani
Expert
posted Hide Post
By the way, 
.../YYYYMD
should be 
.../YYMD


Francis


Give me code, or give me retirement. In FOCUS since 1991

Production: WF 7.7.05M, Dev Studio, BID, MRE, WebSphere, DB2 / Test: WF 8.1.05M, App Studio, BI Portal, Report Caster, jQuery, HighCharts, Apache Tomcat, MS SQL Server
 
Posts: 10577 | Location: Toronto, Ontario, Canada | Registered: April 27, 2005Report This Post
GinnyJakes
Expert
posted Hide Post
And without quotes.


Ginny
---------------------------------
Prod: WF 7.7.01 Dev: WF 7.6.9-11
Admin, MRE,self-service; adapters: Teradata, DB2, Oracle, SQL Server, Essbase, ESRI, FlexEnable, Google
 
Posts: 2723 | Location: Ann Arbor, MI | Registered: April 05, 2006Report This Post
j.gross
Virtuoso
posted Hide Post
quote:
Originally posted by GinnyJakes:
And without quotes.


That "works", but runs against the documentation:

Writing Date Expressions 
A date expression can consist of: 

[a] A date constant enclosed in quotation marks. For example:
COMPUTE STARTDATE/MDYY = 'FEB 28 1999' ;

[b] A calculation that uses numeric operators, date functions, or date subroutines to return a date. For example:
DEFINE DELIVERY/MDY = SHIPDATE + 5 ;

[c] A calculation that uses numeric operators, date functions, or date subroutines to return an integer that represents the number of days, months, quarters, or years between two dates. For example:
COMPUTE TURNAROUND/I4 = MDY (ORDERDATE, SHIPDATE) ;


As I see it,
20091231
is an integer expression not involving Date fields or Date-valued functions, so it falls under [c], and should yield a date 20,091,231 days beyond the epoch date. (The fact that the implementation nonetheless treats it as a yyyymmdd date value, rather than assigning an absurd date well beyond year 9999, is no guarantee of future behavior.)

OTOH, 
'20091231'
is a valid date constant (in the context of assignment to a /YYMD field) and falls under [a], so it's perfectly safe to use.


- Jack Gross
WF through 8.1.05
 
Posts: 1925 | Location: NYC | In FOCUS since 1983 | Registered: January 11, 2005Report This Post
Jeff_Rowland
Gold member
posted Hide Post
Thanks to all. My report is calculating the # of business days correctly now.

Jeff


7.7.02 Windows7
HTML/Excel/PDF
 
Posts: 66 | Registered: April 16, 2008Report This Post
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