Extract Distinct Data from SQL Tables Using Advanced Techniques

Eliminating Duplicate Rows with Null Values Using the WITH Clause

How to Select One Row from a Table Where Three Columns Have Repeating Values Using Subqueries, Window Functions, or Common Table Expressions (CTEs)

Counting Unique Values Per Month in R: A Step-by-Step Guide

Finding Sailors Who Have Booked Every Boat: A Query-Based Approach