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Anonymous's avatar
Anonymous
Not applicable
4 years ago
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How to add / Subtract Character for SUBSTRING - causing some data type issue wrong data type or has

Hi    I want to Implement SUBSTRING in Power BI, From a blog where i got to know by using LEFT and RIGHT Text functions we can achive it, which i'm able to write DAX properly, After that i need to ...
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  • v-kkf-msft's avatar
    v-kkf-msft
    4 years ago

    Hi Anonymous ,

     

    Because there are 0 values in the return value of your variable "Var Len_First = SEARCH("First",'Require Comment'[Note Comment],,0)", and the -1 will exist after subtracting 1. And using -1 as an argument in the function LEFT will result in an error.

     

     

    Please try modifying the variable to the following formula.

     

    Var In_Substring =
    LEFT (
        RIGHT ( 'Require Comment'[Note Comment], TotalLenght ),
        IF ( Len_FirstCallback = 0, 0, Len_FirstCallback - 1 )
    )

     

    If the problem is still not resolved, please provide detailed error information or the expected result you expect. Let me know immediately, looking forward to your reply.
    Best Regards,
    Winniz
    If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Anonymous's avatar
Anonymous
Not applicable
4 years ago

Hi  Samarth_18 

 

 Thanks much for your quick response, I have tried it but still it is throwing the same error as below.

 

 

 

My observation is as below,

var TotalLenght = LEN(''Require Comment'[Note Comment])  -- NO issue with this Variable

 

But my assumption , the issue cause one is the below one 

 

Var Len_First = SEARCH("First",'Require Comment'[Note Comment],,0)  

The output i get is 99 , but i want to consider till 98 

 

the same above when i try to add -1 its not doing it 

Var Len_First = SEARCH("First",'Require Comment'[Note Comment],,0)  -1

its throwing wrong value 

 

So alternately i tried to do as below 

Var Len_First = LEN(SEARCH("First",'Require Comment'[Note Comment],,0))  -1

Its also giving wrong out and trowing the same error  "An Argument of function 'LEFT' has the wrong data type or has --an invalid value"

 

Need support on this how to fix, bec i need to do the similar measures for 4 , if i fixed one i can solve remaining where i need to add + 10 and + 15 for that 

 

Thanks

 

Samarth_18's avatar
Samarth_18
Icon for Community Champion rankCommunity Champion
4 years ago

Anonymous Please try this:-

m =
VAR Len_First =
    SEARCH ( "First", 'Require Comment'[Note Comment],, 0 )
VAR TotalLenght =
    LEN ( 'Require Comment'[Note Comment] )
VAR Substring1 =
    IF (
        Len_First <> blank,
        LEFT (
            RIGHT ( 'Require Comment'[Note Comment], TotalLenght ),
            INT ( Len_First ) - 1
        )
    )
RETURN
    Substring1
  • Anonymous's avatar
    Anonymous
    Not applicable
    4 years ago

    Hi Samarth_18 ,

     

    Ya i tried it, but still it is throwing error as below.

     

     

    Thanks,

     

    • Samarth_18's avatar
      Samarth_18
      Icon for Community Champion rankCommunity Champion
      4 years ago

      Anonymous  Seems now error is different so you can try this now:-

      m =
VAR Len_First =
    SEARCH ( "First", 'Require Comment'[Note Comment],1, 0 )
VAR TotalLenght =
    LEN ( 'Require Comment'[Note Comment] )
VAR Substring1 =
    IF (
        Len_First <> blank,
        LEFT (
            RIGHT ( 'Require Comment'[Note Comment], TotalLenght ),
            INT ( Len_First ) - 1
        )
    )
RETURN
    Substring1