Using Window Functions in MySQL: Fetching Last N Rows for Multiple Users

Optimizing Database Queries for Nested Grouping and Self-Joins in SQL

Retrieving Top 1 Status for Each Manager Using SQL: A Step-by-Step Solution

Understanding Lateral Joins in PostgreSQL: A Deep Dive

Using Window Functions to Get the Highest Metric for Each Group

Optimizing Postgres Queries: Simplifying Subqueries and Indexing Strategies for Performance Gains

Retrieving the Most Recent Record for Each ID: A SQL Solution

Filtering SQL Server Data According to Its Max Value

Get Top 1 Row of Each Group: A Comprehensive Guide to Aggregate Functions and Data Normalization

Using Arrays for Conditional Aggregation in BigQuery: A Pivot Table Solution