pub async fn update_by_partition_key(test: &mut Test)Expand description
Test update on a model with a partitioned composite primary key using the partition-key-only filter.
Todo::filter_by_user_id(user_id).update() uses only the partition key in the
filter expression. For NoSQL (DynamoDB), this requires a QueryPk to find all
matching records and then an UpdateItem for each — not just a bare QueryPk
that silently discards the mutation.