Understanding Transactions in Database Management Systems: How Rollbacks Work and Why You Need Them

Selecting One Row per Group by Based on Multiple Criteria in Postgres

Stored Procedures in SQL Server: Understanding the Concept of a Check Count

Creating a Table with Unique Records for Every Combination of Currency and Date Using Cross Joins in SQL Server

Finding Duplicate Email Addresses: A Comparison of SQL Approaches

Duplicating Rows in a Dataset Based on Multiple Conditions Using Recursive CTEs

Efficiently Updating Date Formats with Day-Month Format in SQL Server

Converting Rows of One Table to JSON and Adding it to Another Table in PostgreSQL: A Practical Guide

Understanding SQL Subqueries: A Deep Dive into Filtering and Grouping Data

Converting SQL Queries to JSON Format: A Valuable Skill for Data Analysts and Developers