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* Optimize query for fetching to-device messages in `/sync` (#16805)Erik Johnston2024-01-111-0/+1
The current query supports passing in a list of users, which generates a query using `user_id = ANY(..)`. This is generates a less efficient query plan that is notably slower than a simple `user_id = ?` condition. Note: The new function is mostly a copy and paste and then a simplification of the existing function.