Hi everyone,
I have an string which has the condition to be performed while retrieving
from database. I automap my model and make reference to it by using another
variable name.
How can achieve retrieve data by filter which is in string?
here is my code
from sqlalchemy import create_engine
from sqlalchemy.ext.automap import automap_base
from sqlalchemy.orm import Session
from sqlalchemy import MetaData
engine = create_engine("sqlite:///chinook.db", echo = False)
metadata = MetaData()
model = 'employees'
condition = 'employees.City == "Chennai"'
metadata.reflect(engine, only=[model])
base = automap_base(metadata=metadata)
base.prepare()
map_model = base.classes[model]
session = Session(engine)
retrieve = session.query(map_model).filter(condition)
for i in retrieve:
print(i.EmployeeId)
--
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