Counting column items based on column selection

[SBePicas]

I have created three independent columns

What I'd like to do is to select a column and get the number of items.  For exmple if I select Col1, I get 3 but selecting COL3 would get 6.  

May be using a measure and drop it in a card...

Many thanks in advance.

[FreemanZ]

hi @SBePicas ,

What do you mean by "independent"?

Are they from the same table? If they are from different tables, are the tables related?

[SBePicas]

Sorry, still learning the proper terminology.

I have one table with 3 columns.  Each field (column) is dragged into the report editor and thus I have three visuals in the report editor.

[v-shex-msft · Accepted solution]

HI @SBePicas,

I'd like to suggest you create a new table with three field names and use it as source of slicer.

NewTable =
DATATABLE ( "ColName", STRING, { { "Col1" }, { "Col2" }, { "Col3" } } )

After these steps, you can create a measure formula with switch function to check current selected value and redirect to different calculation expressions.

DC based on selection =
VAR selected =
    SELECTEDVALUE ( NewTable[ColName] )
RETURN
    SWITCH (
        selected,
        "Col1", COUNTROWS ( VALUES ( Table1[Col1] ) ),
        "Col2", COUNTROWS ( VALUES ( Table1[Col2] ) ),
        "Col3", COUNTROWS ( VALUES ( Table1[Col3] ) ),
        COUNTROWS ( VALUES ( Table1[Col1] ) )
    )

Regards,

Xiaoxin Sheng

[sevenhills]

Distinct count = 
VAR _val1 = VALUES(Tablename[Col1])
VAR _val2 = VALUES(Tablename[Col2])
VAR _val3 = VALUES(Tablename[Col3])
VAR _union = DISTINCT(UNION(_val1,_val2, _val3))
RETURN COUNTROWS(_union)

Try this!