Bug: using `Computed` column in SQLAlchemy causes an exception

[AlexPetul]

Description

If SQLAlchemy model declares a computed field, creating an instance of this class fails. This is true only when using persistence.

URL to code causing the issue

No response

MCVE

class Author(Base):
    __tablename__ = "authors"

    id: Any = Column(Integer(), primary_key=True)
    age: Any = Column(Integer())
    computed: Any = Column(Integer(), Computed(age * age))

Steps to reproduce

Screenshots

"In the format of: ![SCREENSHOT_DESCRIPTION](SCREENSHOT_LINK.png)"

Logs

def do_execute(self, cursor, statement, parameters, context=None):
>       cursor.execute(statement, parameters)
E       sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) cannot INSERT into generated column "computed"
E       [SQL: INSERT INTO authors (id, age, computed) VALUES (?, ?, ?)]
E       [parameters: (2201, None, 9325)]
E       (Background on this error at: https://sqlalche.me/e/20/e3q8)

Release Version

3.0

Platform

• Linux
• Mac
• Windows
• Other (Please specify in the description above)