New returns a new DB.

Driver is a default driver used for tests.

Result is a wrapper for sql.Result that adds MustLastInsertId and MustRowsAffected.

Row is a wrapper for sql.Row that adds MustScan.

Rows is a wrapper for sql.Rows that adds MustScan.

Stmt represents a prepared statement in the database.

DB is a database connection.

Target is a target for a query, either a plain DB or a Tx.

Tx is a transaction.