Finding Distinct IDs with Due Dates on the Last Day of Each Month

Dynamic Table Queries with SQL Server: A Step-by-Step Approach

Self-Joining a Table: A Comparison of Common Table Expressions and Cross Join/Left Join Approaches for Creating New Key-Value Pairs

Understanding Date and Time Functions in SQL for Efficient Extraction and Calculation.

How to Select Latest Submission for Each Subject Using SQL GROUP BY as Inner Query

How to Generate Unique Usernames in Postgres: A Deep Dive

Preventing Orphaned Polymorphic Records in MySQL and SQLite Databases: A Comparison of Solutions and Best Practices

How to Define an Oracle Trigger for Self-Referential Tables While Avoiding Infinite Loops

Grouping SQL Results by Month: A Deeper Dive into Query Optimization and Insights

Finding All Customers Who've Placed Two Types of Orders Using a Handrolled Pivot Approach