Dax help measure !!

[Anonymous]

Hi,

I'm making a dax command to create a flag in a message like "present / no present"  so to do that I use data in column A and B, the two columns come from the same table named: table 1, in column A I have some letters and in column B I have their respective codes, like is shown in the picture below. The measure that I want to do is to create a third column that shows a message "present" if one letter from column A has code as Control and other codes (A1, A5...) from column B; and I would show also "no present" if one letter from column A has only code as Control from column B.             

Thank you! My best regards 

[Anonymous]

@d_gosbell 

[d_gosbell · Accepted solution]

If I understand your requirements correctly and you want to do this as a calculated column you could do something like the following

Attending Result = 
VAR colAvalue = 'Table 1'[Column A] 
VAR hasControl = COUNTROWS( FILTER('Table 1', 'Table 1'[Column A] = colAvalue && 'Table 1'[Column B] = "Control"))
VAR rowsInGroup = COUNTROWS( FILTER('Table 1', 'Table 1'[Column A] = colAvalue))
RETURN IF( hasControl = 1 && rowsInGroup > 1, "Present", "No present")