Question

How can I resolve the "IN operator is not supported" error when writing DAX queries?

While writing DAX queries in Power BI, I’ve encountered the “IN operator is not supported” error when trying to use the IN function for filtering or comparisons. I need to use this operator in my queries but am unsure of the alternatives or proper syntax to resolve this issue. How can I rewrite my DAX queries to achieve the same result without triggering the error?

Answer 1

To fix the error “IN operator is not supported” in DAX, one can apply an alternate syntax to use a similar type of filtering. In SQL, the IN clause is used to check whether a value exists in a list, while in DAX, such functionality can be achieved with the use of functions such as CONTAINS or a series of OR statements, depending on the exact situation.

Another approach frequently utilized in this case is to apply the CONTAINS function, which verifies whether a certain table has rows that satisfy the given criteria. For instance, let’s say you are trying to filter for specific values in a list where the use of IN might not be appropriate. You could also use CONTAINS instead of IN as follows.

FILTER(Table, CONTAINS({ "Value1", "Value2", "Value3" }, [ColumnName], Table[Column]))

Another approach is to use OR statements to achieve similar results. This works well if you have only a few values to check. For instance:

FILTER(Table, Table[Column] = "Value1" || Table[Column] = "Value2" || Table[Column] = "Value3")

These approaches should help avoid the “IN operator not supported” error in DAX and give you the filtering functionality you need.