As far as I know, it's not possible to apply restrictions based on individual columns.

Hi, 

We have a similar use case where we want to use the same view across departments while some users can see financial data while others not.

Our workaround so far is, as part of the data processing, to duplicate the table, erase/set to null what it sensitive and use an additional column to identify which of the records contain the sensitive data. We then use the Data permissions to filter the records on the helper column, based on User / User Group.

So far we haven’t had any performance issue but our dataset is also fairly limited.

Best,

Benjamin