topic Error with VALUES Function When No Filter is Applied and Issue with ADDCOLUMNS in DAX Measure in DAX Commands and Tips

Error with VALUES Function When No Filter is Applied and Issue with ADDCOLUMNS in DAX Measure

Janchieta — Mon, 23 Dec 2024 21:43:40 GMT

I'm trying to create a DAX measure that calculates reliability, but I’m encountering an issue. The goal is to make the measure work when one or more equipment items are selected. However, when no equipment filter is applied, it throws an error in the graph. I need help adapting the formula to handle this case properly.

Here’s the original code:

Confiabilidade_Sistema =

VAR t = SELECTEDVALUE(Tabela_TTF[TTF]) -- Time to failure (in hours)

VAR Equipamentos = VALUES(TTF[Equipamento Corrigido])

VAR Confiabilidades =

ADDCOLUMNS(

Equipamentos,

"Confiabilidade",

VAR Beta = CALCULATE([b_eq], TTF[Equipamento Corrigido] = EARLIER(TTF[Equipamento Corrigido]))

VAR Eta = CALCULATE(EXP(-[a_eq] / Beta), TTF[Equipamento Corrigido] = EARLIER(TTF[Equipamento Corrigido]))

RETURN IF(NOT(ISBLANK(Beta)) && NOT(ISBLANK(Eta)), EXP(-POWER(t / Eta, Beta)), 1)

)

RETURN

1 - PRODUCTX(Confiabilidades, 1 - [Confiabilidade])

Now, I’m trying to adapt the formula to handle both cases — when equipment is filtered and when no filter is applied:

Confiabilidade_Sistema =

VAR t = SELECTEDVALUE(Tabela_TTF[TTF]) -- Time to failure (in hours)

VAR Equipamentos =

IF(

ISFILTERED(TTF[Equipamento Corrigido]),

VALUES(TTF[Equipamento Corrigido]),

FILTER(

VALUES(TTF[Equipamento Corrigido]),

NOT(ISBLANK(TTF[a_eq]))

)

VAR Confiabilidades =

ADDCOLUMNS(

Equipamentos,

"Confiabilidade",

VAR Beta = CALCULATE([b_eq], TTF[Equipamento Corrigido] = EARLIER(TTF[Equipamento Corrigido]))

VAR Eta = CALCULATE(EXP(-[a_eq] / Beta), TTF[Equipamento Corrigido] = EARLIER(TTF[Equipamento Corrigido]))

RETURN IF(NOT(ISBLANK(Beta)) && NOT(ISBLANK(Eta)), EXP(-POWER(t / Eta, Beta)), 1)

)

RETURN

1 - PRODUCTX(Confiabilidades, 1 - [Confiabilidade]) -- Calculates system reliability

However, it returns the following error: "The ADDCOLUMNS function expected a table expression for the '' argument, but a string or numeric expression was used."

The issue arises when no equipment is selected. If any equipment is selected, the graph works fine. Could you help me fix this issue?

Re: Error with VALUES Function When No Filter is Applied and Issue with ADDCOLUMNS in DAX Measure

SachinNandanwar — Mon, 23 Dec 2024 23:03:07 GMT

Hi,
Can you try CALCULATETABLE instead of FILTER ?

VAR Equipamentos = IF( ISFILTERED(TTF[Equipamento Corrigido]), VALUES(TTF[Equipamento Corrigido]), CALCULATEDTABLE( VALUES(TTF[Equipamento Corrigido]), NOT(ISBLANK(TTF[a_eq])) ) )

Re: Error with VALUES Function When No Filter is Applied and Issue with ADDCOLUMNS in DAX Measure

anmolmalviya05 — Tue, 24 Dec 2024 05:21:01 GMT

Hi Janchieta , Please try the below updated measure:

Confiabilidade_Sistema =
VAR t = SELECTEDVALUE(Tabela_TTF[TTF]) -- Time to failure (in hours)
VAR Equipamentos =
IF(
ISFILTERED(TTF[Equipamento Corrigido]),
VALUES(TTF[Equipamento Corrigido]),
FILTER(
ALL(TTF[Equipamento Corrigido]),
NOT(ISBLANK(CALCULATE([a_eq])))
)
)
VAR Confiabilidades =
ADDCOLUMNS(
Equipamentos,
"Confiabilidade",
VAR Beta = CALCULATE([b_eq], TTF[Equipamento Corrigido] = EARLIER(TTF[Equipamento Corrigido]))
VAR Eta = CALCULATE(EXP(-[a_eq] / Beta), TTF[Equipamento Corrigido] = EARLIER(TTF[Equipamento Corrigido]))
RETURN IF(NOT(ISBLANK(Beta)) && NOT(ISBLANK(Eta)), EXP(-POWER(t / Eta, Beta)), 1)
)
RETURN
IF(
ISBLANK(t),
BLANK(), -- Handles cases where TTF is not available
1 - PRODUCTX(Confiabilidades, 1 - [Confiabilidade]) -- Calculates system reliability
)