Whether you are a beginner or an experienced professional, it is important to be well-prepared for SQL queries-based interview questions. In this article we will see top 70+ SQL interview questions and answers which include basic, advanced, technical, and scenario based questions asked by ...
Intermediate SQL JOINS Interview Questions 11. Distinguish between nested subquery, correlated subquery, and join operation. Subquery–Queries can be embedded in other queries. Therefore, an outer query is called the main query and the Internal queries are called subquery. Nested query–The inner qu...
A SQL Server index is created using the shape of B-Tree structure, that is made up of 8K pages, with each page, in that structure, called an index node. The B-Tree structure provides the SQL Server Engine with a fast way to move through the table rows based on index key, that deci...
Hi friends, Here we will look into various Interview questions which are common and frequently asked in Interviews. Hope it benefits for freshers and experienced. Recommendation ReadSome basic SQL queries which should be practiced before going to Interview - Part 1beforethis article. Introdu...
To make complex queries easy To provide data Independence Views provide groups of users to access data according to their requirements. Pl SQL Interview Questions For Experienced 41) What is the difference between Simple and Complex Views?
SQL Server Interview Questions A list of top frequently askedSQL Serverinterview questions and answers are given below. 1) What is SQL Server? SQL Server is the RDBMS system provided by Microsoft which functions mainly as retrieving and storing the data as per user request. Sometimes it is mist...
Without a doubt, few technologies in SQL Server cause as much confusion and the spread of misinformation as indexes. This article looks at some of the most asked questions and a few that should be asked but often are not. We’ll be using SQL Server 2016 for the examples and a tool, fo...
Prepare for your next interview with the top 40 MySQL questions and answers for beginners and experienced professionals in 2024 boosting your success.
PostgreSQL Interview Questions Experienced: Q17) How do you handle performance issues in PostgreSQL? Poor database design, sluggish queries, or lack of hardware resources can all lead to PostgreSQL performance problems. Database performance can be examined to find slow queries, missing indexes, and ...
Check out the 25 SQL performance-related questions. 25 QuestionsSQL Performance Tuning Interview Practice with the Tricky SQL Queries Get an SQL compiler handy to start practicing with the below tricky queries. 1. Retrieve all employees and their departments, including those without a department. ...