The use of comparison operators like <,> or = can be done in a subquery. These kinds ofSQL Interview Questionsare a bit difficult to understand and answer accordingly. There are a lot ofSQL Interview Questionsapart from this, which the candidates must practice qualifying for the interview. Fo...
172 SQL Questions and Answers:SQL Job Interview Questions Table of Contents: What is SQL (Structured Query Language)? What is the SQL*Plus? What is NVL? What is a Character Functions? What is SET? What is a TTITLE & BTITLE? What is sql BREAK? What is sql JOIN? What is sql ...
However, there is a standard SQL solution that works in all of the above engines, including MySQL: select a.id from test_a a left join test_b b on a.id = b.id where b.id is null; 7. Write a SQL query to find the 10th highest employee salary from an Employee table. Explain ...
Example: SQL Server. 3. What is SQL? SQL stands for Structured Query Language , and it is used to communicate with the Database. This is a standard language used to perform tasks such as retrieval, updation, insertion and deletion of data from a database. 7. What is a unique key? A...
Frequently Asked SQL Interview Questions 1. What is a Database? Adatabase refers to a structured data collection that can be stored, managed, and retrieved from a remote or local computer system. Databases can become pretty complex and are built with a fixed design and modeling approach. ...
have permission to query the view, while denied access to the rest of the base table. SQL INTERVIEW QUESTIONS AND ANSWERS 7 | P a g e Views can join and simplify multiple tables into a single virtual table Views can act as aggregated tables, where the database engine aggregates data (su...
Softwaretesting-QuestionsandAnswers-SQLInterviewQuestions Q.WhatdoesSQLstandfor? A.StructuredQueryLanguage Q.Whatisaprimarykey? A.Primarykey:EachrowofthedatainatableuniquelyidentifiedbyaPrimaryKey Thecolumn(columns)thathascompletelyuniquedatathroughoutthetableis ...
Q. How MAXDOP impacts SQL Server? Ans: The Microsoft SQL Server max degree of parallelism (MAXDOP) configuration option controls the number of processors that are used for the execution of a query in a parallel plan. This option determines the computing and threads resources that are used for...
There are two common ways an SQL tech screening can be done. The simpler but less common way is that you get a computer, a data set, and a task. While you are solving the task, the interviewers are listening and asking questions. A little trial-and-error is totally fine, as long as...
Following are some important Interview Questions for SQL : 1.What is SQL?Where SQL is used? Answer: SQL is Structured Query Language, which is a computer language for storing, manipulating and retrieving data stored in relational database.SQL can be used in different languages or database manag...