There is JDBC support, so if you're willing and able to connect that way, you could hope for an easier migration. Any move from one database to another is a mig

There is JDBC support, so if you're willing and able to connect that way, you could hope for an easier migration. Any move from one database to another is a migration, even if only to deal with dialect-specific things. Disclosure: I work on Google Cloud (but not Spanner).