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

Finding Unique Values and Replacing Them: A Step-by-Step Guide to Data Cleaning with R

Using Windowed Functions in SQL Queries: A Solution to Avoid Tripled Data

Eliminating Duplicate Rows with Null Values Using the WITH Clause

How to Remove Duplicates from Multiple Joined Arrays in Postgres Using Knex

Counting Distinct Records in SQL Databases Using GROUP BY, HAVING, and DISTINCT

How to Fix SQL Distinct with ORDER BY: Avoiding Duplicates and Getting the Right Results