Which {SQL,} databases do this as a native, online database feature; so you don't have to pull backups to sqldiff?
E.g. django-reversion and VDM do versioned domain model on top of SQL, but not with native temporal database features.
Many apps probably could or should be written as mostly-append-only - not necessarily blocking until the previous record is available to hash – but very few apps are written that way, so run sqldiff offline.
There is Dolt, which started out as git for tables but is turning into a MySQL compatible database with good versioning. (Including branches and merges.)
E.g. django-reversion and VDM do versioned domain model on top of SQL, but not with native temporal database features.
Many apps probably could or should be written as mostly-append-only - not necessarily blocking until the previous record is available to hash – but very few apps are written that way, so run sqldiff offline.