Skip to main content

weekstart - script and chart function

This function returns a value corresponding to a timestamp of the first millisecond of the first day (Monday) of the calendar week containing date. The default output format is the DateFormat set in the script.


WeekStart(date [, period_no = 0 [, first_week_day=0]])

Return data type: dual


WeekStart arguments
Argument Description
date The date to evaluate.
period_no shift is an integer, where the value 0 indicates the week which contains date. Negative values in shift indicate preceding weeks and positive values indicate succeeding weeks.

If you don't specify first_week_day, the value of variable FirstWeekDay will be used as the first day of the week.

If you want to use another day as the first day of the week, set first_week_day to:

  • 0 for Monday
  • 1 for Tuesday
  • 2 for Wednesday
  • 3 for Thursday
  • 4 for Friday
  • 5 for Saturday
  • 6 for Sunday

The integer returned by the function will now use the first day of the week that you set with first_week_day as base (0).

Examples and results:  

These examples use the date format DD/MM/YYYY. The date format is specified in the SET DateFormat statement at the top of your load script. Change the format in the examples to suit your requirements.

Example 1:  


Returns 07/01/2013.

Example 2:

weekstart('12/01/2013', -1 )

Returns 31/11/2012.

Example 3:  

weekstart('12/01/2013', 0, 1)

Returns 08/01/2013.

Example 4:  

Add the example script to your document and run it. Then add, at least, the fields listed in the results column to a sheet in your document to see the result.

This example finds the first day of the week following the week of each invoice date in the table.


LOAD RecNo() as InvID, * Inline [


















WeekStart(InvDate, 1) AS WkStart

Resident TempTable;

Drop table TempTable;

The resulting table contains the original dates and a column with the return value of the weekstart() function. You can display the full timestamp by specifying the formatting in the chart properties.

Example 4 results
InvDate WkStart
28/03/2012 02/04/2012
10/12/2012 17/12/2012
5/2/2013 11/02/2013
31/3/2013 01/04/2013
19/5/2013 20/05/2013
15/9/2013 16/09/2013
11/12/2013 16/12/2013
2/3/2014 03/03/2014
14/5/2014 19/05/2014
13/6/2014 16/06/2014
7/7/2014 14/07/2014
4/8/2014 11/08/2014

Did this page help you?

If you find any issues with this page or its content – a typo, a missing step, or a technical error – let us know how we can improve!

Join the Analytics Modernization Program

Remove banner from view

Modernize without compromising your valuable QlikView apps with the Analytics Modernization Program. Click here for more information or reach out: