Prompt Title: ORM model for software.

Created 1 year ago
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Prompt Detail:

In SQLAlchemy, you can turn on the output of raw SQL by setting the echo parameter to True when creating the engine. Here is an example:

sql
from sqlalchemy import create_engine, MetaData, Table, Column, Integer, String from sqlalchemy.orm import sessionmaker # Define a database engine and metadata with echo=True engine = create_engine('sqlite:///example.db', echo=True) metadata = MetaData() # Define a table users_table = Table('users', metadata, Column('id', Integer, primary_key=True), Column('name', String), Column('age', Integer)) # Create the table in the database metadata.create_all(engine) # Insert some data into the table Session = sessionmaker(bind=engine) session = Session() session.add_all([ {'name': 'Alice', 'age': 25}, {'name': 'Bob', 'age': 30}, {'name': 'Charlie', 'age': 35}, ]) session.commit() # Define a query query = session.query(users_table).filter_by(age=30) # Execute the query (SQL output will be printed) results = query.all()

In this example, we create the database engine with the echo parameter set to True. This will cause SQLAlchemy to print out the SQL statements it generates as it executes them. We then define a query and execute it using the all method, which will return the results of the query. As the query is executed, SQLAlchemy will print out the SQL statement it generates.

The output of this code will be similar to the following:

sql
2023-03-10 04:18:32,283 INFO sqlalchemy.engine.base.Engine SELECT users.id, users.name, users.age FROM users WHERE users.age = ? 2023-03-10 04:18:32,283 INFO sqlalchemy.engine.base.Engine (30,)

Note that the actual output may contain more information, including timing information and the actual values of the query parameters, depending on the echo settings and other configuration options.

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Joao Carlos
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Created 1 year ago

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