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1. Is this request related to a challenge you're experiencing? Tell me about your story.

now the using of db.session.query gives very terrible typing result.

use new select api will make it better.

2. Additional context or comments

https://docs.sqlalchemy.org/en/20/orm/queryguide/select.html

https://docs.sqlalchemy.org/en/20/changelog/migration_20.html#migration-orm-usage

3. Can you help us with this feature?

• I am interested in contributing to this feature.