Python: SQL Server SQLAlchemy opening and closing connections

Demonstrates executing a SQL INSERT statement by opening and closing a connection to Cloud SQL for SQL Server using SQLAlchemy.

Explore further

For detailed documentation that includes this code sample, see the following:

• Manage database connections

Code sample

Python

To authenticate to Cloud SQL for SQL Server, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

# Preparing a statement before hand can help protect against injections.
stmt = sqlalchemy.text(
    "INSERT INTO votes (time_cast, candidate) VALUES (:time_cast, :candidate)"
)
try:
    # Using a with statement ensures that the connection is always released
    # back into the pool at the end of statement (even if an error occurs)
    with db.connect() as conn:
        conn.execute(stmt, parameters={"time_cast": time_cast, "candidate": team})
        conn.commit()
except Exception as e:
    # If something goes wrong, handle the error in this section. This might
    # involve retrying or adjusting parameters depending on the situation.
    # ...

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