Hi,
We have two tables: users and topics. They’re linked in a many-to-many fashion (I can write to Tim about pancakes and pizza, Ann about pizza and Alex and pancakes).
I want to be able to add a topic to a subset of selected users. For example, I set filters and get 100 users that I have not written to about pizza (some of them received emails about pancakes, others about pancakes and nails, others haven’t received anything). I want to “add” pizza to their topic.
Before:
- mark - pancakes
- tom - pancakes, nails
- jerry - {nothing}
After:
- mark - pancakes, pizza
- tom - pancakes, nails, pizza
- jerry - pizza
How do I do it? We have the db structure ready, just need to modify the records.
