count items in a database with sqlalchemy

Confused Cardinal answered on August 30, 2022 Popularity 1/10 Helpfulness 1/10

answer count items in a database with sqlalchemy

count items in a database with sqlalchemy

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from sqlalchemy.orm import sessionmaker
import sqlalchemy as db
from sqlalchemy.ext.declarative import declarative_base
 
Base = declarative_base()
 
# DEFINE THE ENGINE (CONNECTION OBJECT)
engine = db.create_engine(
    "mysql+pymysql://root:password@localhost/Geeks4Geeks")
 
# CREATE THE TABLE MODEL TO USE IT FOR QUERYING
class Students(Base):
 
    __tablename__ = 'students'
 
    first_name = db.Column(db.String(50), primary_key=True)
    last_name = db.Column(db.String(50), primary_key=True)
    course = db.Column(db.String(50), primary_key=True)
    score = db.Column(db.Float)
 
 
# CREATE A SESSION OBJECT TO INITIATE QUERY IN DATABASE
Session = sessionmaker(bind=engine)
session = Session()
 
# SELECT * FROM PROFILE
result = session.query(Students).count()
 
# VIEW THE RESULT
print("Count:", result)

Popularity 1/10 Helpfulness 1/10 Language python

Source: www.geeksforgeeks.org

Tags: count database items python sqlalchemy

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