SQL Interview Questions And Answers | SQL Interview Preparation | SQL Training

SQL Interview Questions And Answers | SQL Interview Preparation | SQL Training

This video on SQL interview questions and answers covers a list of 30 important questions that will help you in SQL interview preparation. You will learn the top practical and theoretical questions to brush up your skills and get an idea of the questions that are frequently asked. You will solve some interesting challenging problems on MySQL and MS SQL Server.

This video on SQL interview questions and answers covers a list of 30 important questions that will help you in SQL interview preparation. You will learn the top practical and theoretical questions to brush up your skills and get an idea of the questions that are frequently asked. You will solve some interesting challenging problems on MySQL and MS SQL Server.

Below are a few questions that you will learn:

  • 00:00:00 Write an SQL query to fetch the unique values of departments and print their length.
  • 00:16:26 Write an SQL query to display the departments that have more than 2 employees.
  • 00:27:49 Print all the alternate records in a table.
  • 00:34:06 Write the SQL query to fetch all the duplicate rows in a table.
  • 00:37:53 Display the employees with exactly 2 A's in their name.
  • 00:45:54 How does Self join work?
  • 00:53:35 Write an SQL query to print one row twice in results from a table.
  • 01:19:54 Using the Orders table in the Northwind database, find all the month-end orders.
  • 01:22:23 Find the top 5 countries with the highest freight charges in the year 1997.
  • 01:29:10 Using the Northwind database, find the list of late orders for all the employees.

What is SQL? SQL stands from Structured Query Language. It is used to communicate with several relational databases such as MySQL, Oracle and MS SQL Server. Using SQL queries, you can fetch, update, delete and manipulate data that is stored in the form of rows and columns. SQL became the de facto standard programming language for relational databases after they emerged in the late 1970s and early 1980s. You can also permit users to perform specific tasks on tables, procedures, and views. SQL commands are divided into different types, such as data manipulation language (DML), data definition language (DDL), transaction control language (TCL), and data query language (DQL).

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