How to Retrieve Recent Records in One-to-Many Relationships Using Subqueries and Aggregate Functions

How to Filter and Aggregate Data Based on Customer IDs in R Programming Language

Understanding Aggregate Functions in SQL: Calculating the Number of Occurrences

Filtering Dates in a SQL Query: A Practical Guide

Inserting Additional Text into Table Fields Using SQL

Mastering the SQL YEAR Data Type: Solutions for Dates Beyond 2155

Finding Overlapping Availability Dates with SQL for Efficient Person Search in Date Ranges.

Optimizing Query Optimization: Summing Row Values with Conditions for Closing Orders

Mastering the SQL Group By Clause: A Guide to Understanding Its Implications and Best Practices

Understanding How to Join Data Columns as Strings with GROUP_CONCAT in SQL