https://beomi.github.io/2017/10/20/DB-To-SQLAlchemy-Model/
If you are using Flask-SqlAlchemy, see the paginate method of query. paginate offers several method to simplify pagination.
record_query = Record.query.paginate(page, per_page, False)
total = record_query.total
record_items = record_query.items
First page should be 1 otherwise the .total returns exception divided by zero
https://flask-sqlalchemy.palletsprojects.com/en/2.x/api/
https://edykim.com/ko/post/getting-started-with-sqlalchemy-part-2/
https://blog.hongminhee.org/2013/10/30/65522658529/
https://planbs.tistory.com/entry/Engine%EA%B3%BC-Session-Scoped-Session
https://transaction.readthedocs.io/en/latest/sqlalchemy.html
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