Tomasz,

Have you taken a look at DAYOFWEEK_ISO scalar function? It returns 7, if
the date is on a Saterday.

Using this in a CASE construction it is either CURRENT DATE - 14 DAYS or
CURRENT DATE - 7 DAYS.

With regards,
Carel Teijgeler


*********** REPLY SEPARATOR ***********

On 7-4-2011 at 15:58 Tomasz Skorża wrote:

Hi

I need to create an algorithm which allow me to calculate diffrence
between two dates but assumption
is that first day of week is SATURDAY, and week going from saturday to
friday.
So if first date is 2011-03-28 - monday, then for second date from
2011-03-29 to 2011-04-01
algorithm should return 1 (week), but for 2011-04-02 - saturday algorithm
should return 2 (weeks).
Have you any idea?

I tried many posssibilities and something is wrong, depend on start and
stop dates sometimes result
is as I expect sometimes not ...

Regards

Tomek
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