Filling a new record with values from a previous record

A common task!

To fill a new record with values from a previous record, you can use various methods depending on the programming language and database management system you're using. Here are a few examples:

SQL

Assuming you have a table old_records with columns id, name, email, and a new table new_records with columns id, name, email, you can use the following SQL query to fill the new record with values from the previous record:

INSERT INTO new_records (id, name, email)
SELECT id, name, email
FROM old_records
WHERE id = <previous_id>;

Replace <previous_id> with the actual ID of the record you want to copy.

Python with SQLAlchemy

Using SQLAlchemy, you can use the session.merge() method to fill a new record with values from a previous record:

from sqlalchemy import create_engine, Table, Column, Integer, String
from sqlalchemy.orm import sessionmaker

# Create a session
engine = create_engine('sqlite:///example.db')
Session = sessionmaker(bind=engine)
session = Session()

# Define the tables
old_records = Table('old_records', metadata,
    Column('id', Integer, primary_key=True),
    Column('name', String),
    Column('email', String)
)

new_records = Table('new_records', metadata,
    Column('id', Integer, primary_key=True),
    Column('name', String),
    Column('email', String)
)

# Get the previous record
previous_record = session.query(old_records).get(1)  # Replace with the actual ID

# Create a new record with values from the previous record
new_record = new_records.insert().values(
    id=previous_record.id,
    name=previous_record.name,
    email=previous_record.email
)

# Commit the changes
session.commit()

Java with Hibernate

Using Hibernate, you can use the session.merge() method to fill a new record with values from a previous record:

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.query.Query;

// Create a session factory
SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
Session session = sessionFactory.getCurrentSession();

// Define the entities
@Entity
public class OldRecord {
    @Id
    private Integer id;
    private String name;
    private String email;
}

@Entity
public class NewRecord {
    @Id
    private Integer id;
    private String name;
    private String email;
}

// Get the previous record
OldRecord previousRecord = session.get(OldRecord.class, 1);  // Replace with the actual ID

// Create a new record with values from the previous record
NewRecord newRecord = new NewRecord();
newRecord.setId(previousRecord.getId());
newRecord.setName(previousRecord.getName());
newRecord.setEmail(previousRecord.getEmail());

// Save the new record
session.save(newRecord);

// Commit the changes
session.getTransaction().commit();

These are just a few examples of how you can fill a new record with values from a previous record. The specific method you use will depend on your programming language, database management system, and the structure of your tables.