sqlalchemy insert or ignore

https://github.com/pallets/flask-sqlalchemy/issues/241

https://docs.sqlalchemy.org/en/14/changelog/migration_12.html#support-for-insert-on-duplicate-key-update

https://stackoverflow.com/questions/46654221/sqlalchemy-core-insert-ignore-and-on-duplicate-key-update

https://stackoverflow.com/questions/2218304/sqlalchemy-insert-ignore

https://stackoverflow.com/questions/39256258/how-do-i-tell-sqlalchemy-to-ignore-certain-say-null-columns-on-insert