SQL Interview

How to Use Union in SQL Queries

Using UNION with SQL queries is a great way to explore the power of databases like MySQL and SQL servers. UNION allows you to combine results from different SELECT statements seamlessly. This simplified guide aims to make SQL UNION approachable…

IF Statement in SQL Queries: A Quick Guide

In crafting SQL queries, the IF statement adds a dynamic layer, allowing conditional execution. This tutorial aims to provide an in-depth understanding, offering practical examples and insights into leveraging the IF statement effectively. Understand the SQL IF Statement In SQL,…

WHERE Clause in SQL: A Practical Guide

While writing SQL queries, the WHERE keyword plays an important role. It not only gives you precise results but also saves your database server from extra processing. SQL WHERE Clause Explained with Examples By using the WHERE clause, you can…

A Beginner’s Guide to SQL Joins

Hello friends, welcome to our latest SQL tutorial. Today, we'll explore the joins in SQL, a fundamental concept for combining data from multiple tables. SQL Joins Explained with Examples Whether you're a beginner or improving your SQL skills, a solid…

20 SQL Tips and Tricks for Performance

In this tutorial, we bring you some of the common and useful SQL tips to improve the performance of your database-centric tasks. It doesn't matter whether you are a DBA, a web developer, or a tester. These tricks can help…

Top 50 Tricky SQL Queries for Interview

Hello friends, in this SQL hands-on tutorial, you'll find 50 tricky SQL queries for practice with their answers. Practicing tricky SQL queries is like sharpening your tools for working with data. SQL skills matter because they help you handle and…

The Difference between UPSERT & Insert

In MySQL, it is important to understand the difference between UPSERT and INSERT statements while working with tables. Understand the Difference Between UPSERT & INSERT The INSERT statement adds entirely new records to a table, whereas UPSERT combines the functionalities…

SQL Programming Test

Welcome to this amazing SQL programming test that will help anyone deeply interested in working with databases. This test will help you assess your strengths and find gaps in your SQL skills. Ultimately, you'll know which part of the SQL…

How to CREATE a TABLE in SQL

SQL table creation is a database operation that creates a new table using an SQL query. A table is a collection of data organized into rows and columns. Each row represents a single record, and each column represents a single…

SQL Exercises – Complex Queries

Dear friends, we have again brought you a new set of SQL exercises for practice. This post first provides SQL commands to create the required tables and populate demo data. After running the below commands, you will get ready to…

25 SQL Performance Interview Questions and Answers

Whether you are a developer creating web applications, a DBA, or a tester involved in web testing, you should know SQL. It is an important skill for both areas including database programming and validation. Hence, we took up this challenge…

50 SQL Query Practice Questions for Interview

Hello friends, we've brought you 50 frequently asked SQL query interview questions and answers for practice. Solving practice questions is the fastest way to learn any subject. That’s why we’ve selected these 50 SQL queries ⤵ to give you enough…

30 PL SQL Interview Questions and Answers

No matter, whether you are a fresher QA engineer or a beginner in the DBA field. PL/SQL is a skill that is essential for engineers of both these profiles. Hence, we curated this post with thirty PL SQL interview questions…

SQL Interview Questions and Answers (5+ Exp)

Database and SQL skills are highly sought-after by various IT companies, such as Accenture, Microsoft, Cognizant, Stack Overflow, and Dell. These skills are also essential for DBAs and QA engineers. In this article, we covered some of the core SQL…