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
Microsoft Employee
5 years agoNot 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
- dpeters655 years agoNew Member
Thank you mahoneypat! I didn't realize that DAX is case-insensitive.