Copying a table change the datatype

[pl456]

Hi, I've found a weird behavior in PBI Desktop :

If I create a new table from scratch with a date column like so :


And I copy this table using DAX :

The newly created table will have the date column type as Date/time instead of Date like the original table :


Is that behaviour by design? Any way around this?

Thanks for the help.

[MartynRamsden · Accepted solution]

Hi @pl456 

This isn't a bug but a difference in how dates are handled between DAX and Power BI.

DAX only has the DateTime data type to handle dates. In Power BI, there are two additional data type: Date and Time.

See here for more info: dax.guide/dt/datetime/ 

Because you're using DAX to create your new table, the data type is forced to DateTime.

Once you've created your new table, you can simply change the data type of the column using the UI in Power BI.

Hope this helps.

Best regards,
Martyn

If I answered your question, please help others by accepting it as a solution.

[pl456]

That makes a lot of sense. Thanks for the explanation.