sqlx's query!/query_as! macros only check raw SQL strings against the live
schema; Diesel's table!-derived DSL type-checks query structure itself at
compile time. SQLite has no native async driver, so diesel-async wraps a
blocking SqliteConnection via SyncConnectionWrapper, pooled with bb8.
Migrations move from sqlx's single-file-per-migration format to Diesel's
up.sql/down.sql pairs, run transactionally via diesel_migrations against a
throwaway sync connection at boot (MigrationHarness needs a sync
Connection), giving revertable migrations that sqlx::migrate! doesn't
support.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
