Common SQL mistakes can lead to serious issues related to data integrity and query performance. It is important to identify and prevent such mistakes. In this blog I will take you through common pitfalls that can happen with SQL. Let's break dow…

Selecting the right business intelligence (BI) tool is a critical decision for organizations aiming to harness their data effectively. Three leading BI platforms, Looker, Tableau, and Power BI, offer a spectrum of capabilities.  Let's explore ho…

SQL commands are the building blocks that enable you to retrieve, manipulate, and maintain data within databases efficiently. In this beginner's guide, I'll take you on a journey through the fundamental SQL commands. SELECT Statement: SELECT…

Businesses are inundated with an ever-increasing amount of data. Effectively managing and utilizing this data is crucial for informed decision-making, competitive advantage, and innovation. Three primary data storage solutions have emerged to tackle…

Market Basket Analysis is a data analysis technique used in data mining and business intelligence to uncover associations between products or items that are frequently purchased or used together. It is primarily applied in retail and e-commerce bu…

Reverse pair duplicate data" in SQL typically refers to a situation where you have pairs of records in a database where the order of the elements in each pair is reversed but the content is identical or corresponds in some meaningful way. For…

"DELETE," "DROP," and "TRUNCATE" are three distinct statements used for different purposes: DELETE Statement: The DELETE statement is used to remove one or more specific rows from a table based on a specified conditio…

The video delves into the following topics: Clustered Index Non-Clustered Index Creating an Index with a Primary Key Constraint Crafting a Clustered Index on a Single Column Configuring a Clustered Index on Multiple Columns Generating a Non-Cluste…

Write a query to display the comparison result (higher/lower/same) of the average salary of employees in a department to the company’s average salary? Result table should contain: Month Department Avg dept salary Company avg monthly salary Compari…

There are several functions and operators used to work with NULL values in SQL. These functions and operators are used to handle, check, or manipulate NULL values in various ways. Some common ones include: IS NULL: The IS NULL operator is used to ch…