Struct VersionedMigration 

pub struct VersionedMigration {
    pub version: u32,
    pub name: &'static str,
    pub up: &'static str,
}

A single forward-only schema migration.

Migrations are applied in order from the current DB version to the target version. Each migration runs in its own transaction; a failure rolls back that migration and leaves the DB at the prior version.

Fields

version: u32

Monotonically increasing version number, starting at 1.

name: &'static str

Short human-readable name for the migration (used in the audit table).

up: &'static str

SQL to apply this migration. May contain multiple statements separated by semicolons; execute_batch runs them all.