Bijay Kumar Sahoo
One question kept popping up in meetings and interviews: SQL or NoSQL – which database technology should I focus on? Over the years, having worked with both database types extensively across various industries from finance in to healthcare —I’ve come to appreciate the unique strengths and ideal use cases of each. In this comprehensive guide, … Read more
Understanding the difference between these two SQL clauses isn’t just academic—it’s essential for writing correct, efficient queries. I’m sharing everything I’ve learned about HAVING vs WHERE. Whether you’re a beginner learning SQL or an experienced developer looking to sharpen your skills, this comprehensive guide will clarify these often-confused clauses once and for all. SQL HAVING … Read more
The distinction between SQL and MySQL is fundamental to understanding how modern databases work, yet it’s one of the most commonly misunderstood topics in software development. Let me walk you through everything you need to know. SQL vs MySQL Understanding the Core Difference Here’s the simplest way I explain it to newcomers: SQL is a … Read more
As a database professional working with SQL Server for over a decade, I’ve seen countless scenarios where table-valued functions (TVFs) have transformed complex queries into elegant, reusable solutions. Today, I’m going to share everything I’ve learned about this powerful feature that every SQL Server developer should master. SQL Server Table Valued Function What Are Table-Valued … Read more
Creating temporary tables from SELECT statements in SQL Server can be accomplished using SELECT INTO or CREATE TABLE followed by INSERT INTO syntax, with temporary tables starting with # for local scope or ## for global scope. SQL Server Create Temp Table From Select Understanding SQL Server Temporary Tables What Are Temporary Tables in SQL … Read more
Here, we will discuss the proven strategies for safely renaming tables while maintaining data integrity, application compatibility, and business continuity for critical enterprise systems. Rename Table In SQL Server Understanding SQL Server Table Rename Operations What is Table Renaming in SQL Server? Table renaming in SQL Server is a fundamental database administration operation that changes … Read more
Understanding primary key creation is fundamental to building robust, scalable databases. Today, I’ll share my comprehensive guide on creating tables with primary keys in SQL Server. SQL Server Create Table With Primary Key Understanding Primary Keys in SQL Server Before diving into the technical implementation, let me establish why primary keys are the cornerstone of … Read more
In this comprehensive guide, I’ll walk you through multiple proven methods to import Excel files into SQL Server temporary tables. SQL Server Import Excel File Into Temp Table Before diving into the technical aspects, let me explain why temporary tables are often the preferred destination for Excel imports: Prerequisites System Requirements To successfully import Excel … Read more
In this comprehensive tutorial, I’ll share the proven strategies to help you master temporary table data retrieval in SQL Server for optimal query performance and efficient data processing workflows. How to Retrieve Data from Temp Table in SQL Server Understanding SQL Server Temporary Tables Temporary tables in SQL Server are special database objects that provide … Read more
In this comprehensive tutorial, I’ll share all the useful strategies to help you make informed architectural decisions between temporary tables and views, ensuring your SQL Server databases deliver enterprise-grade performance. Temp Table vs View in SQL Server What Are Temporary Tables? Temporary tables are physical database objects stored in SQL Server’s tempdb system database, providing … Read more