Tutorial with example: Calculate working hours with DAX in Power BI
In today’s DAX Fridays we will learn how Power pivot or Power BI manages time using the TIME function.
We will also create an example with the TIME function where we will calculate the working hours in a calendar.
Download example file:
To get the files:
1. Go to Curbal Download Center > Dax Fridays
2. Get File #48
In contrast to Microsoft Excel, which stores dates and times as serial numbers, DAX works with date and time values in a datetimeformat. Numbers in other formats are implicitly converted when you use a date/time value in a DAX function. If you need to use serial numbers, you can use formatting to change the way that the numbers are displayed.
Time values are a portion of a date value, and in the serial number system are represented by a decimal number. Therefore, the datetime value 12:00 PM is equivalent to 0.5, because it is half of a day.
You can supply the arguments to the TIME function as values that you type directly, as the result of another expression, or by a reference to a column that contains a numeric value. The following restrictions apply:
- Any value for hours that is greater than 23 will be divided by 24 and the remainder will be treated as the hour value.
- Any value for minutes that is greater than 59 will be converted to hours and minutes.
- Any value for seconds that is greater than 59 will be converted to hours, minutes, and seconds.
- For minutes or seconds, a value greater than 24 hours will be divided by 24 and the reminder will be treated as the hour value. A value in excess of 24 hours does not alter the date portion.
To improve readability of the time values returned by this function, we recommend that you format the column or PivotTable cell that contains the results of the formula by using one of the time formats provided by Microsoft Excel.
This DAX function may return different results when used in a model that is deployed and then queried in DirectQuery mode. For more information about semantic differences in DirectQuery mode, see http://go.microsoft.com/fwlink/?LinkId=219171.