How to Use SELECT DISTINCT and LEFT Functions Together in a Single SQL Query

Joining Three Tables in SQL: A Step-by-Step Guide to Understanding Inner, Left, and Right Joins and How to Correctly Define Join Conditions for Optimal Results.

Inner Join with Query in Redash: Resolving Ambiguity with Quotation Marks

Finding Maximum Age Per Section and Returning Only One Student with Highest Age and Smallest ID in MySQL

Understanding SQL Group Functions: How to Avoid 'Invalid Group Function' Errors with Best Practices

Database Design for Scalability and Maintainability: Balancing Normalization and Denormalization Strategies for a Question/Answer/Blog Site

Preventing Duplicate Rows in SQL Tables: Best Practices and Solutions

Retrieve Data from Three Tables without Joins and Subqueries in SQL

Excluding Unpublished Nodes from Drupal DB Query Results Using db_query and EFQs

Finding the Min and Max of a Team Based on Rank Using MySQL's RANK Function