MySQL adapter

MySQL uses Drizzle's officially supported mysql2 driver. Bunway adds mysql2 when MySQL is selected or added. Bun.SQL can execute direct MySQL SQL, but current Drizzle uses mysql2; Bunway does not claim the two drivers are interchangeable. Drizzle Kit generates migration SQL and Bunway applies it through Drizzle ORM's mysql2 migrator so database errors remain visible.

Generated UUID IDs are 36-character UUIDv7 values populated with Bun.randomUUIDv7(). Integer and bigint IDs are unsigned auto-incrementing columns. Generated timestamps use MySQL timestamps with database defaults. CRUD generation accounts for MySQL's lack of PostgreSQL-style RETURNING.

PostgreSQL-only arrays, JSONB, network, interval, and timestamptz generator types are rejected. Use ordinary drizzle-orm/mysql-core builders for MySQL-specific columns and indexes. Bunway Jobs cannot use a MySQL connection.

The Showcase runs on a MySQL primary except for durable Jobs, workers, and queued Messaging; use the immediate Job handler and Messaging paths documented by the guide.