This function returns
a value corresponding to a timestamp of the last millisecond of the
lunar week containing date. Lunar weeks in Qlik Sense are defined by counting 1 January as the first day of the week.
Syntax:
LunarweekEnd(date[, period_no[, first_week_day]])
Return data type: dual
Arguments:
Arguments
Argument
Description
date
The date to evaluate.
period_no
period_no
is an integer or expression resolving to an integer, where the value 0 indicates the lunar week which contains
date. Negative values in period_no indicate preceding lunar weeks
and positive values indicate succeeding lunar weeks.
first_week_day
An offset that may be greater than or less than zero. This changes the beginning of the year by the specified number of days and/or fractions of
a day.
These examples use the date format DD/MM/YYYY. The date format is specified in the SET DateFormat statement at the top of your data load script. Change the format in the examples to suit your requirements.
Scripting examples
Example
Result
lunarweekend('12/01/2013')
Returns 14/01/2013 23:59:59.
lunarweekend('12/01/2013', -1)
Returns
7/01/2013 23:59:59.
lunarweekend('12/01/2013', 0, 1)
Returns 15/01/2013 23:59:59.
Example:
Add the example script to your app and run it. Then add the fields listed in the results column to a sheet in your app to see the result.
This example finds the final day of the lunar week of each invoice date in the table, where the date is shifted by one week by specifying period_no as 1.
TempTable:
LOAD RecNo() as InvID, * Inline [
InvDate
28/03/2012
10/12/2012
5/2/2013
31/3/2013
19/5/2013
15/9/2013
11/12/2013
2/3/2014
14/5/2014
13/6/2014
7/7/2014
4/8/2014
];
InvoiceData:
LOAD *,
LunarWeekEnd(InvDate, 1) AS LWkEnd
Resident TempTable;
Drop table TempTable;
The resulting table contains the original dates and a column with the return value of the lunarweekend() function. You can display the full timestamp by specifying the formatting in the properties panel.
Results table
InvDate
LWkEnd
28/03/2012
07/04/2012
10/12/2012
22/12/2012
5/2/2013
18/02/2013
31/3/2013
08/04/2013
19/5/2013
27/05/2013
15/9/2013
23/09/2013
11/12/2013
23/12/2013
2/3/2014
11/03/2014
14/5/2014
27/05/2014
13/6/2014
24/06/2014
7/7/2014
15/07/2014
4/8/2014
12/08/2014
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