I have a simple single-table design that I want to keep flexible for the future, I currently have 2 entity types: users and videos. Users have a 1:n relationship to videos.

The table's partition key is `pk` and sort key is `sk`.

Users: `pk=u#<id> and sk=u#<id>`, `entityType: user`

Videos: `pk=u#<id> and sk=v#<id>`, `entityType: video`

If I want to fetch all users, does it make sense to create a GSI with `PK=entityType` and `SK=sk`?