I just want to implement a simple tasks of:
- Load data from CSV list
- Read each file
- Transform a data field
- Do group by and count
So that I implement the workflow as below screenshot.
My error happen at tAgrregationRow with message : the operation 'count' for the output column can't be processed because of incompatible input and/or output types.
Please tell me what is wrong with them?
Solved! Go to Solution.
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