How to Read a SQL Server Execution Plan (Beginner’s Guide)
Execution plans look confusing at first. Learn to read a SQL Server plan step by step: right to left, arrow thickness, cost percentages, the operators that matter, and a real example.
SQL Server
Eager Index Spool in SQL Server: What It Means and How to Fix It
Seeing an Index Spool (Eager Spool) in your SQL Server execution plan? Here is what it means, why SQL Server builds a temporary index on every run, and the one index that makes it disappear.
SQL Injection Explained Simply: What It Is and How to Prevent It
Understand how SQL injection happens and how to prevent it with parameterised queries in PHP, Laravel, Delphi and C#, plus extra defences.
Database Backup and Restore Explained Simply (SQL Server, MySQL and PostgreSQL)
How database backups work: full, differential and log backups, point-in-time restore, the 3-2-1 rule, and commands for SQL Server, MySQL and PostgreSQL.
SQL Triggers Explained Simply (With a Price History Example)
Learn what SQL triggers are, how to write them in SQL Server, MySQL and PostgreSQL, and when they help or hurt, with a price history example.
SQL Data Types Explained Simply: Choosing the Right Type for Each Column
A practical guide to SQL data types: numbers, text, dates and more, with differences between SQL Server, MySQL and PostgreSQL.
SQL Stored Procedures Explained Simply (SQL Server, MySQL and PostgreSQL)
Learn what stored procedures are, how to create and run them in SQL Server, MySQL and PostgreSQL, and when they are worth using.
SQL Transactions and ACID Explained Simply (With a Bank Example)
What SQL transactions are, how BEGIN, COMMIT and ROLLBACK work, and what ACID means, explained with a simple bank transfer example.
How to Fix Query Timeout and Performance Issues in Delphi Applications Connected to SQL Server (A Practical Guide)
Struggling with Query Timeout errors or sluggish performance in your Delphi and SQL Server application? Discover 5 practical, battle-tested fixes
How to Choose the Right Database Server for Your Project
You’ve learned about MySQL, PostgreSQL, and SQL Server. Now comes the real question: which one should you actually use? This