Column '___' from left dataset has new data type 'string’
Message type
NOTIFICATION
Bricks
Join Data
Reason
Sometimes key columns provided to “Join Data” brick as inputs may be of different but compatible data types (for example, category and string). This message notifies your about this and also that brick automatically converted to a specific data type
How to solve
No additional actions are needed. Optionally, you can manually convert data types using the “Typization” brick