Automated Duplicate Record Cleanup and DBA Notification in MariaDB with Python

“Efficiency meets automation: Keeping your MariaDB clean and your DBA informed with Python.”

MinervaDB Automation and Performance Engineering

To delete duplicate records in MariaDB, you can use SQL queries to identify and remove them. Below are the steps for doing this and a Python script for scheduling this task weekly and notifying the DBA via email. In this example, we’ll use the smtplib library to send email notifications.

Step 1: Delete Duplicate Records

You can identify and delete duplicate records using a SQL query that utilizes the DELETE statement with a self-join. Here’s a sample SQL query to delete duplicates from a table named your_table based on a specific criteria (e.g., duplicate email values):

This query will delete all but one of the duplicate records, keeping the one with the lowest id value. Adjust the table name, columns, and criteria to match your database schema.

Step 2: Python Script for Weekly Scheduling and Email Notification

You can use Python’s schedule library to schedule the task and smtplib to send email notifications. Before running the script, make sure you have configured your SMTP email settings.

Make sure to replace the placeholders (e.g., your_db_host, your_db_user, your_db_password, your_db_name, your_table, and email details) with your actual database and email configuration. This script will delete duplicate records and send an email notification to the DBA every week on the specified schedule.

Note: Ensure that you have installed the required Python libraries (schedule, smtplib) using pip if they are not already installed. Additionally, consider running this script on a server or machine where it can be scheduled to run automatically.

About Shiv Iyer 443 Articles
Open Source Database Systems Engineer with a deep understanding of Optimizer Internals, Performance Engineering, Scalability and Data SRE. Shiv currently is the Founder, Investor, Board Member and CEO of multiple Database Systems Infrastructure Operations companies in the Transaction Processing Computing and ColumnStores ecosystem. He is also a frequent speaker in open source software conferences globally.