Transforming Data with PIVOT: A Step-by-Step Guide to Selecting Multiple Rows into Columns in SQL Server

Understanding SQL Table Joins and Resolving Common Issues in Data Analysis

Generate Alphabetical Sequence Code for Specific IDs in SQL Server

Securing Database Credentials with Variables: A Best Practice Guide for Creating Database Scoped Credentials Securely Using Variables for Username (Identity) and Password (Secret).

Understanding Composite Primary Keys and Overcoming the Update Challenge

Filtering Rows Based on Duplicate Account Values in T-SQL Using CTEs or Window Functions

Extracting Domain Names from Emails in SQL Using CTEs

Identifying Consecutive Dates by Customer with Same Line and Company in SQL: A Step-by-Step Guide to Calculating Duration and Total Spending

Conditional Aggregation in SQL: Replacing NULL Values with Zero Using CASE Expression

Counting Different Groups in the Same SQL Query: A Deeper Dive into Optimizations and Best Practices