How to write a nested IF statement that has multiple outputs? - powerbi

Question

The context:
Column 1 Column 2 Column 3 Column 4 (IF statement result column)
a,b 2.99 $2.99 1/2 mismatch
a a,b 3.49 $2.89 Column 1/2 mismatch,3/4 mismatch
b a 1.99 $2.99 Column 1/2 mismatch,3/4 mismatch
a,b a,b 3.49 $3.49
so only in stance of and exact match (I have many columns that have comparable values that I need to follow this pattern). Is there a way to do this?

Answer 1

I don't think you need nested IF statements, just CONCATENATEX:
Result =
VAR ColList = { [Column1], [Column2], <...more columns if needed..> }
RETURN
CONCATENATEX ( FILTER ( ColList, LEN ( [Value] ) > 0 ), [Value], "," )
Edit: The basic approach above can still be used but you'll want to modify what is in your ColList.
Result =
VAR Pair12 = IF ( [Column 1] <> [Column 2], "1/2 mismatch" )
VAR Pair34 = IF ( [Column 3] <> [Column 4], "3/4 mismatch" )
VAR ColList = FILTER ( { Pair12, Pair34 }, LEN ( [Value] ) > 0 )
RETURN
"Column " & CONCATENATEX ( ColList, [Value], "," )
Or refactored a bit to remove variables:
Result =
"Column "
& CONCATENATEX (
FILTER (
{
IF ( [Column 1] <> [Column 2], "1/2 mismatch" ),
IF ( [Column 3] <> [Column 4], "3/4 mismatch" )
},
LEN ( [Value] ) > 0
),
[Value],
","
)