Learn how to solve the SQL Server Gaps and Islands problem to identify consecutive day streaks using ROW_NUMBER(), CTEs, and practical real-world examples.
Mastering the “Gaps and Islands” Problem in SQL Server: Finding Consecutive Day Streaks Read Post »
When writing complex SQL, developers often ask: Should I use a CTE, a Temp Table, or a Derived Table? All
CTEs vs Temp Tables vs Derived Tables: Which One Should You Use? Read Post »
Introduction As databases grow and applications scale, SQL performance tuning becomes one of the most valuable skills for a Database
Top SQL Performance Tuning Techniques Every DBA Should Know Read Post »
Introduction A great database design is like a strong foundation – everything built on top of it depends on its
10 Common Mistakes to Avoid While Designing a Database Read Post »
Introduction Slow queries can cripple your application’s performance, frustrate users, and overload your servers.As databases grow and workloads become more
SQL Server Performance Tuning: 10 Proven Techniques to Speed Up Your Queries Read Post »
Introduction This is a critical area for database performance. While indexing is essential for fast reads, misused indexes can severely
10 Common Indexing Mistakes in SQL Server (and How to Avoid Them) Read Post »
Introduction SQL joins are one of the most essential and tricky parts of database querying.They help you combine data from
10 Common Mistakes to Avoid While Using SQL Joins Read Post »
Introduction Even the best developers and DBAs make mistakes when writing SQL – it happens to everyone. Some of these
20 Common SQL Server Mistakes Developers Make (and How to Fix Them) Read Post »
Whenever a DBA is firefighting a database issue, having a reliable set of SQL troubleshooting scripts is crucial. These scripts
10 Essential SQL Server Scripts Every DBA Must Have for Performance Troubleshooting Read Post »
Introduction If the SQL Server instance is slow, the most valuable diagnostic tool is often the simplest: checking Wait Types.
Top 10 SQL Server Wait Types Explained & Fixed Read Post »
Sharding and partitioning are both strategies for horizontally dividing a large database to improve performance and scalability. While they share
Sharding vs Partitioning: Key Differences, Use Cases, and Examples Explained Read Post »
Performance tuning in SQL begins with understanding how queries are executed behind the scenes. This is where execution plans come
Understanding SQL Execution Plans: A Complete Guide for Database Professionals Read Post »
This cheat sheet summarizes common wait types, their causes, and recommended actions.
SQL Server Wait Types Cheat Sheet for Performance Tuning Read Post »
🧾 What is a Ghost Record in SQL? In Microsoft SQL Server, a ghost record refers to a logically deleted
Ghost records in SQL Read Post »
What is Transactional Replication in SQL Server? Transactional replication is a SQL Server feature. It copies data from one database,
What is Transactional Replication in SQL Server and how to setup? Read Post »
When working with databases that are several terabytes (TB) in size, numerous challenges emerge. These challenges arise from the data
Challenges of working on database of size in TBs Read Post »
The SQL Server Relational Engine, also known as the Query Processor, is responsible for interpreting and executing SQL queries. It
How SQL Server Relational Engine works in processing SQL queries Read Post »
Understanding SQL Injection in SQL Server What is SQL Injection? SQL Injection is a security vulnerability that allows attackers to
What is SQL Injection and how to prevent it? Read Post »
This article explains how to implement database partitioning in SQL Server, its benefits, and best practices.
Database Partitioning in SQL Server Read Post »
This article explains Correlated subqueries which are a powerful SQL feature for handling row-specific comparisons and complex conditions.
Correlated Subqueries in SQL Server Read Post »
This article explains Materialized views & its benefits in SQL Server which provide a powerful mechanism for improving query performance.
Materialized View in SQL Server and its benefits Read Post »
You must be logged in to post a comment.