Mastering Postgres List Data Type: A Guide to Associative Tables for Efficient Database Design

Selecting Unique Rows with Priority Value: Alphabetical Ordering vs Row Numbering

Querying Data from Multiple Sources: A Deep Dive into Joins and Grouping

Finding Top-Performing Employees by Weekly Hours Worked

Enforcing Business Rules on Many-to-Many Relationships: A Safe and Transparent Approach Using Materialized Views

Extracting Timestamp from MongoDB Object ID in Amazon Athena Using SQL Queries

Creating Simple Stored Procedures to Update Tables in SQL Server Using Dynamic SQL

Understanding SQL Joins and Aggregate Functions

Finding Missing IDs in a Listing using MySQL's NOT EXISTS Condition

Optimizing Query Performance: Calculating Sums of Certain 'id' and Dividing the Result by Groups