T-SQL – SQL Circuit

SQL Server – Explain What Does a T-SQL Query Execution Plan Tell Us?

A T-SQL Query Execution Plan is a diagnostic blueprint showing how SQL Server processes queries under the hood. It’s crucial…

The T-SQL Query Life Cycle outlines the journey a query takes from submission to execution within SQL Server. Understanding each…

Employee Table having Manager & Salary Data Query to Find Employees Having Salary Greater Than Their Manager: Query Explanation:

We can get the department-wise highest salary by leveraging SQL functions like ROW_NUMBER() or using GROUP BY with a JOIN.…

Instead of relying on traditional SQL loops like WHILE, we’re going to use a Recursive CTE (Common Table Expression) to…

Here’s the sequential breakdown of above SQL query execution flow:

A palindromic string is a word or phrase that reads the same backward as forward. They’re symmetrical, self-reflecting, and satisfyingly…

The Covid-19 pandemic drastically reshaped the global work culture. As offices shut down, remote work became the norm for millions.…

When working with strings in SQL Server, we often need to understand how much space they occupy and how many…

Did you know your SQL Server can fluently understand and store languages like Hindi, Tamil, Japanese, or even emojis? Gone…

Finding duplicate values in SQL Server is a common requirement when cleaning data, identifying data quality issues, or enforcing uniqueness…

In SQL Server, ISNULL and NULLIF are two essential functions used to handle NULL values, but they serve very different…