Forum Discussion
dpeters65
5 years agoNew Member
Duplicate values after Group By
Refresh fails with message "Column 'Restart Cause' in Table 'new_sort' contains a duplicate value [redacted for company privacy reasons] and this is not allowed for columns on the one side of a many-...
- 5 years ago
Not sure if this applies here but when I see issues like this it is because M is case sensitive while DAX is not. If you use UPPER or lower case of the column before you group, you will be sure to get rid of duplicates.
Pat
mahoneypat
5 years agoMicrosoft Employee
Not sure if this applies here but when I see issues like this it is because M is case sensitive while DAX is not. If you use UPPER or lower case of the column before you group, you will be sure to get rid of duplicates.
Pat
dpeters65
5 years agoNew Member
Thank you mahoneypat! I didn't realize that DAX is case-insensitive.