The expression specified in the query is not a valid table expression

[Anonymous]

Hi, please I am using table variable and when i call the table name "evaluate tbl "with evaluate it works but when I use it in the context of countrows it returns the error above

*

DEFINE
VAR fsumX =
SUMMARIZE(CHA,[Employee],[YearNo],[Organisation],[MonthNamed],
"CallTimeDuration",SUM(CHA[CallTimeDuration])
)
VAR tbl =
FILTER(
fsumX, 
[AvgDBanding] = "Less Than 60 Min(s)" && CHA,[Organisation] = "b" && CHA,[MonthNamed] ="November"
          )

EVALUATE

COUNTROWS(tbl)
//tbl

*

I saw a similar solution that works with countrows (https://social.msdn.microsoft.com/Forums/sqlserver/en-US/42325576-064d-4fbf-bc1c-12fbd6c89728/dax-co...) but i could not get the quey for mine.

I will appreciate a guide on this

Thanks

[JustJan]

Hi, 

When I try to run the code I get an error on [AvgDBanding] does not exist. 

When you add [AvgDBanding] to the FsumX / Summarize function then it will probably work.

It does work for me either as a calculated table or as a measure (with countrows, of course), but I tested it with a very simple test set.

Regards,

[Anonymous]

Thanks for the response, the  return works well for me as well, but the "countrows" function on the tbl does not work, I was using the code in dax studio and it was throwing the error, but when I executed the code (countrows)in on power bi it worked, so I am guessing am missing something 

[JustJan · Accepted solution]

Sorry, I thought your problem was in PBI.

In Dax Studio you need to use the following to check the result of a measure:

return
ROW("Result:", COUNTROWS(tbl))

[mbbozzuto]

Thanks - this solution definitely worked!

[Anonymous]

 @JustJan  Thanks for the solution, I had a look at the help of dax studio for "row" context but could not find it , can you send me on a link where i can see more on it. 

[JustJan]

@Anonymous 

There is not too much explanation in the documentation, but it is a starting point:  https://docs.microsoft.com/en-us/dax/row-function-dax

Hope this helps.

[Anonymous]

@JustJan  Thanks