No of Fridays in between two date

Hi all
What is the Qucikest and easy way to retreive the NO of fridyas in betwen two dates
Thanks & Regards
Vivek

vivekvm wrote:
Hi all
What is the Qucikest and easy way to retreive the NO of fridyas in betwen two dates
Make sure you test the boundary conditions for any solution you get.
Have you defined exactly what you mean by "in between two dates", for example. do you want to count the end points if one, or both, of them is a friday ?
Regards
Jonathan Lewis
http://jonathanlewis.wordpress.com
http://www.jlcomp.demon.co.uk
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How to count the number of Fridays and Saturdays between two dates

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Edited by: khalidoracleit on Jul 28, 2010 5:51 AM

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WITH my_dates AS (
SELECT to_date('20100211','yyyymmdd') start_date,to_date('20100519','yyyymmdd') end_date FROM DUAL
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11.02.2010 14.02.2010 THURSDAY                             SUNDAY                               3                      2
11.02.2010 13.02.2010 THURSDAY                             SATURDAY                             2                      2
11.02.2010 12.02.2010 THURSDAY                             FRIDAY                               1                      1                      -- andy

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EXPORTING
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WHEN (@EndDate > cast(DATEADD(d, -1, DATEADD(m, DATEDIFF(m, 0, cast( CONVERT(varchar(4), @for_year) + '-' + CONVERT(varchar(2), @for_month) + '-01' as date)) + 1, 0)) as date)) and (@StartDate between (cast(CONVERT(varchar(4), @for_year) + '-' + CONVERT(varchar(2), @for_month) + '-01' as date)) and (cast(DATEADD(d, -1, DATEADD(m, DATEDIFF(m, 0, cast( CONVERT(varchar(4), @for_year) + '-' + CONVERT(varchar(2), @for_month) + '-01' as date)) + 1, 0)) as date))) THEN
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0
END as [DD]
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8 ),
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25         case when paid_unpaid = lead(paid_unpaid) over (order by curr_date)
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12:06:10 SQL> /
PERIOD                                             PAID_UNPAID
01-JUL-08 - 01-JUL-09                              Y
02-JUL-09 - 25-JUL-09                              N
26-JUL-09 - 01-JAN-10                              Y
02-JAN-10 - 13-JAN-10                              N
14-JAN-10 - 18-JAN-10                              Y
19-JAN-10 - 30-APR-10                              N
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Elapsed: 00:00:00.35

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Jaya

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No of Fridays in between two date

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