How do I convert a columns datatype in DAX?

[rflook]

Hoping this will be easy to answer. 

I have a table which contains student results. Because of the different types of result that exist (9 to 1, and A to E), the data type has to be a string. 

I have filtered my table to only show those grades that are 9 to 1, but as the data has to be live, I cannot change the column data type. 

I need to create a measure that gets the sum of all of the grades for a given student, so need to convert the string values to integer values using DAX. Can this be done?

[v-shex-msft]

HI @rflook,

You can add a filter in your table to exclude the A to E text string, then you can use value function to convert these to numeric before aggregating these values.

formula =
SUMX (
    ADDCOLUMNS (
        FILTER (
            ALLSELECTED ( Table1 ),
            NOT ( [Results] IN { "A", "B", "C", "D", "E" } )
        ),
        "Score", VALUE ( Table1[Results] )
    ),
    [Score]
)

Regards,
Xiaoxin Sheng

[AmiraBedh · Accepted solution]

Can you try the following ? :

Total Grades =
SUMX(
FILTER(YourTableName, ISNUMBER(VALUE(YourGradeColumn))),
IF(
ISERROR(VALUE(YourGradeColumn)),
0,
VALUE(YourGradeColumn)
)
)

[Kishore_KVN]

Hello @rflook 

Use FORMAT DAX function to change the datatype of that particular column in your calculations. 

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