Where in Database can I unshare / unlink all Generic Content

I have a 200+ content blocks that I need to "unshare". Is there a way to do this directly in the database? Any ideas? 

Hi Jonathan,

I would suggest that you do this through the API. You can easily loop through all content blocks or all content blocks on the pages.

I think it is more work to do it directly inside the database.

Regards,
Daniel