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VistaDee's avatar
VistaDee
Frequent Visitor
5 years ago
Solved

Check Characters in string in DAX

Hi

 

Im trying to convert a SQL CASE statement to DAX IF . Lets say I have a column of values like:

ProjectCode

D-IREE00215

BADR0022

A-DD1255

 

and part of the query is as follows:

 

CASE

        WHEN LEFT(ProjectCode,4) LIKE '%[a-z]%' AND SUBSTRING(ProjectCode,5,4) LIKE '%[0-9]%'

 

How do I write this in DAX so that the only field returned will be BADR0022

Need Help
  • Anonymous's avatar
    Anonymous
    5 years ago

    Hi  VistaDee  ,

    Here are the steps you can follow：

    1. Create calculated column

    flag =
var _1={"A","B","C","D","E","F","G","H","I","J","K","M","L","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"}
VAR _2={0,1,2,3,4,5,6,7,8,9}
var _5=IF(ISERROR(VALUE(MID('Table'[column],5,1))),BLANK(),VALUE(MID('Table'[column],5,1)))
var _6=IF(ISERROR(VALUE(MID('Table'[column],5,1))),BLANK(),VALUE(MID('Table'[column],6,1)))
var _7=IF(ISERROR(VALUE(MID('Table'[column],5,1))),BLANK(),VALUE(MID('Table'[column],7,1)))
var _8=IF(ISERROR(VALUE(MID('Table'[column],5,1))),BLANK(),VALUE(MID('Table'[column],8,1)))
RETURN
IF(LEFT('Table'[column],1) IN _1&&MID('Table'[column],2,1) IN _1&&MID('Table'[column],3,1) IN _1&&MID('Table'[column],4,1) IN _1&&
_5 IN _2 && _6 IN _2 && _7 IN _2 &&_8 IN _2,
'Table'[column],BLANK()
)

    2. Result.

    You can downloaded PBIX file from here.

     

    Best Regards,

    Liu Yang

    If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

2 Replies

  • Anonymous's avatar
    Anonymous
    Not applicable
    5 years ago

    Hi  VistaDee  ,

    Here are the steps you can follow：

    1. Create calculated column

    flag =
var _1={"A","B","C","D","E","F","G","H","I","J","K","M","L","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"}
VAR _2={0,1,2,3,4,5,6,7,8,9}
var _5=IF(ISERROR(VALUE(MID('Table'[column],5,1))),BLANK(),VALUE(MID('Table'[column],5,1)))
var _6=IF(ISERROR(VALUE(MID('Table'[column],5,1))),BLANK(),VALUE(MID('Table'[column],6,1)))
var _7=IF(ISERROR(VALUE(MID('Table'[column],5,1))),BLANK(),VALUE(MID('Table'[column],7,1)))
var _8=IF(ISERROR(VALUE(MID('Table'[column],5,1))),BLANK(),VALUE(MID('Table'[column],8,1)))
RETURN
IF(LEFT('Table'[column],1) IN _1&&MID('Table'[column],2,1) IN _1&&MID('Table'[column],3,1) IN _1&&MID('Table'[column],4,1) IN _1&&
_5 IN _2 && _6 IN _2 && _7 IN _2 &&_8 IN _2,
'Table'[column],BLANK()
)

    2. Result.

    You can downloaded PBIX file from here.

     

    Best Regards,

    Liu Yang

    If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

  • PhilipTreacy's avatar
    PhilipTreacy
    Super User
    5 years ago

    Hi VistaDee 

     

    Download sample PBIX with the following code

     

    I understand the SQL code but could you achieve the same thing by checking that the string does not contain a - ?

    To create a column n DAX this would be 

     

    Column = IF(NOT(CONTAINSSTRING('Table1'[ProjectCode], "-")),'Table1'[ProjectCode])

     

    However this is creating a new column in your data model and that might not be what you want as a lot of the column fields will be empty.

    If you want to do it a a measure use this

    Measure = IF(NOT(CONTAINSSTRING(SELECTEDVALUE('Table1'[ProjectCode]), "-")),SELECTEDVALUE('Table1'[ProjectCode]))

    What exactly is the end result you want? A new column? A measure? Or just some code to use elsewhere?

    Regards

    Phil