Add a new field name the field pricepersqft and have

I'm assuming you're referring to a database or a data structure. If that's the case, I'll provide an example of how you can add a new field named "pricepersqft" to a table or a dictionary.

Example 1: Adding a new field to a dictionary (Python)

data = {
    "name": "House",
    "location": "New York",
    "price": 1000000,
    "sqft": 2000
}

data["pricepersqft"] = data["price"] / data["sqft"]

print(data)

Output:

{
    "name": "House",
    "location": "New York",
    "price": 1000000,
    "sqft": 2000,
    "pricepersqft": 500.0
}

Example 2: Adding a new field to a table (SQL)

CREATE TABLE houses (
    id INTEGER PRIMARY KEY,
    name VARCHAR(255),
    location VARCHAR(255),
    price INTEGER,
    sqft INTEGER
);

INSERT INTO houses (name, location, price, sqft) VALUES ('House', 'New York', 1000000, 2000);

ALTER TABLE houses ADD COLUMN pricepersqft REAL;

UPDATE houses SET pricepersqft = price / sqft;

Output:

+----+----------+-----------+--------+----------+
| id | name     | location  | price  | sqft     |
+----+----------+-----------+--------+----------+
| 1  | House    | New York  | 1000000| 2000     |
+----+----------+-----------+--------+----------+

Note that in the SQL example, I used the ALTER TABLE statement to add a new column to the table, and then updated the existing rows using the UPDATE statement.