Combining Two SQL Statements with Same Stem but Different WHERE Clause: A Simplified Solution

How to Use Conditional Aggregation to Simplify Complex Queries in MySQL

Counting Events Where a User is Not Present: A MySQL Query Problem

Using an "Or" Conditional in the `n_distinct` Function of Dplyr: A Flexible Approach to Summarize Counts for Multiple Conditions

Retrieving Course Data Based on User Count: A Comprehensive Approach

Finding the Most Active Video Maker within Multiple Tables (SQLite)

Handling Moving Averages and NULL Values in TSQL: Best Practices for Resilient Data Analysis

How to Count Occurrences with Window Functions and Table Joins for Advanced Data Analysis

Maximizing Bookings per State with MySQL 8.0 Window Functions

Calculating Mean, Standard Deviation, and Counts in a Single Record Using Conditional Aggregation for High Performance