Home > Database > Mysql Tutorial > body text

Why is My Python MySQL Update Statement Failing, and How Can I Fix It?

Mary-Kate Olsen
Release: 2024-11-08 13:26:02
Original
739 people have browsed it

Why is My Python MySQL Update Statement Failing, and How Can I Fix It?

Correcting Python MySQL Update Statement with Variables

In an attempt to update MySQL records using a Python update statement, users may encounter errors. To address this issue, it is crucial to verify the syntax and ensure its proper application.

Incorrect Statement:

Analysis:

The incorrect statement fails due to improper string concatenation and a missing placeholder for the 'Minute' variable. The correct way to write this statement is:

Correct Statement:

Alternative Syntax:

Alternatively, string manipulation can be used:

Caution:

While the alternative syntax may work, it is strongly discouraged as it leaves your application vulnerable to SQL injection attacks. The recommended approach is to use placeholders, as seen in the correct statement.

Database Compatibility:

Furthermore, some database backends may have different string replacement conventions. For example, SQLite uses '?' instead of '%s' for placeholders.

The above is the detailed content of Why is My Python MySQL Update Statement Failing, and How Can I Fix It?. For more information, please follow other related articles on the PHP Chinese website!

source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template