SQL query to remove existing subscriptions?

[ibrian]

I'm trying to tidy up an old forum, but there are a lot of inactive members who have the "Receive activity summary email" option checked, and I'd like to unchecked it to reduce bounced emails.

I presume there must be a simple SQL query I can run in phpmyadmin to change the option for all members from checked to unchecked.

Could anyone advise what this might be, please?

Many thanks for any replies.
SQL query to remove existing subscriptions?

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