Function apply_migration 

pub async fn apply_migration(
    db: &Database,
    migration: &Migration,
    last_migration_table_name: &str,
) -> Result<(), ApplyMigrationError>

Applies a single Migration, updating the “last migration table”.

This function will start a transaction which is rolled back if any of the migration’s operations failed.

This function won’t check the databases current state. It will simply try to apply the migration.