• It's a feature for CONFCLOUD (for some reason I cannot select it)
• Component Databases - Core (view, create, edit)

Move it please to the correct place (or dupe the suggestion). I'm sorry for posting it not in the correct place.

As a user I would like to restrict an access to columns in Confluence Database. 

For example, you could implement settings for creating access groups (inside the certain database). Then user could select a group for every column (by default, it stays the same as for the page).

Example of usage: forbidding users to see (and select in filters or sort) a column, except a list of users, that have to see those sensitive data column, but not to be able to edit that column.

This would enhance security significantly.