Flask-sqlalchemy query datetime intervals

Question

I have defined a table with flask-sqlalchemy. Displayed below.

class Notes(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    notes = db.Column(         


        

Answer 1

Can also try

from sqlalchemy import func, text

@staticmethod
def newest(num):
    return Notes.query.filter(Notes.added_at >= (func.date_sub(func.now(),  text('INTERVAL  8 HOUR')).order_by(desc(Notes.added_at)).limit(num)

OR

from datetime import datetime, timedelta
from dateutil import tz 

@staticmethod
def newest(num):
    recent = datetime.now(tz=tz.tzlocal()) - timedelta(hours=8)

    return Notes.query.filter(Notes.added_at >= recent).order_by(desc(Notes.added_at)).limit(num)