SQL Server and PowerBI DirectQuery mode

[Anonymous]

Hi all,

I have a client masterfile table included in my data model. The table is linked in DirectQuery mode from a SQL Server. In the table query I have added some lines to mock up the data but when I try to replace values in a column based on condition I fail and get the following message: 

This is the step I need to do:

= Table.ReplaceValue(#"Filtered Rows", each [Group], each if [Group] = "” then [Company] else [Group], Replacer.ReplaceValue, {"Group"})

Practically I need to have all cells in column Group filled either with the preexisting value or with the value present in the Company column (both text fields)

I can't believe this is not possible in DirectQuery mode. What am I doing wrong?

Thanks,

C.

[Anonymous]

Hi there, thanks for your reply.

I did actually try the first method above and it did not work. After adding the new column I couldn’t populate it conditionally and got the same message. I will try the second solution (If I can find the way). At the end if nothing works I will accept the import mode but we are talking about a very large table to be possibly used in several reports and would be a real waste of space.

Many thanks indeed; I will let you know how it goes.

Regards,

C.

[DataInsights]

@Anonymous,

One approach would be to add a custom column in Power Query with the "if" statement, and then remove the original column Group. You could also use custom SQL with a CASE statement. With custom SQL, you'll need to put all transformations in the SQL (no M transformations).