topic SELECTCOLUMNS in DAX Commands and Tips

SELECTCOLUMNS

BenazirMohammad — Fri, 04 Dec 2020 20:20:12 GMT

Hi,

I am fairly new to DAX and came across this line of code which I am unable to understand.

If understand correctly SELECTCOLUMNS take table as first argument. But in the case below {"Last 2 Months"}

doesn't exist. Also, not sure where [Value] is coming from and how its being recognized. Any help would be appreciated.

DAX:

Tbl =

SELECTCOLUMNS({"Last 2 Months"},"Period",[Value])

Result:

Period

----------------

Last 2 Months

-----------------

Thanks

camargos88 — Fri, 04 Dec 2020 20:40:56 GMT

What are you trying to do ?

SELECTCOLUMNS selects the columns you want to keep from a table, create new headers and/or add some expressions.

BenazirMohammad — Fri, 04 Dec 2020 20:46:41 GMT

SELECTCOLUMNS({"Last 2 Months"},"Period",[Value])

Yes, but in this case neither the table exist nor the [Value] but its still giving me results.

BenazirMohammad — Fri, 04 Dec 2020 20:47:06 GMT

camargos88 — Fri, 04 Dec 2020 20:52:14 GMT

You are just creating a table using hard code values....

BenazirMohammad — Fri, 04 Dec 2020 21:10:37 GMT

Thanks.

I think I get it. Its creating a table using table constructor

{"Last 2 Months"} and the then pulling the Value using SelectColumns.