so employers test candidates on various concepts ranging from basic to advanced-level queries. This blog covers common SQL interview questions and their answers to help you succeed in your next interview.
SQL Job Interview Questions and Answers 1 :: What is SQL (Structured Query Language)? SQL is an English like language consisting of commands to store, retrieve, maintain & regulate access to your database.Read More 2 :: What is the SQL*Plus? SQL*Plus is an application that recognizes &...
A query, in SQL, is a command used to request data or update information from a database table or combination of tables. Users can write and execute queries to retrieve, delete or update information in a database. Usually, a query response returns data from different tables within the data...
1. Make a note of all node names (and/or IP addresses), SQL Server virtual names along with preferred nodes. If there are more than three nodes you may need to also take note of possible owners for each SQL resource group. For my example assume that I have a cluster with node1 and...
A subquery must be put in the right hand of the comparison operator, and A subquery cannot contain a ORDER-BY clause. A query can contain more than one sub-queries. What are types of sub-queries? Single-row subquery, where the subquery returns only one row. ...
they are just used to speed up queries. Effective indexes are one of the best ways to improve performance in a database application. A table scan happens when there is no index available to help a query. In a table scan SQL Server examines every row in the table to satisfy the query ...
There can be many answers for this. Some of the important stuff I feel is:• A view can combine data from multiple tables using adequate joins and while bringing it may require complex filters and calculated data to form the required result set. From a user's point of view, all these...
Top 50 SQL Queries Interview Questions and Answers To Get Hired Top SQL Joins Interview Questions You Need to Know Top 50 SQL Server Interview Questions and Answers 05 Training Programs Full-Stack .NET Developer Certification Training .NET Certification Training ASP.NET Core Certification Training ...
4. What is the difference between pessimistic locking and optimistic locking? 5. What are the user roles available in SSRS? 6. Can you write a query to find nth highest salary of an employee? 7. Write a query to delete duplicate records from a table. Note: Write queries that suits...
里面储存了很多网页,网页的url地址,title和网页的内容,然后你用一个sql查询将url匹配的排在最前, title匹配的其次,body匹配最后,没有任何字段匹配的,不返回。就是上面这道面试题,让我想了一个下午,在网上找资料,最后用下面方法实现 SELECT * FROM page w 职场 数据库 休闲 SQL面试题 SQL面试题答案 转载 ...