Write a SQL query to find the 10th highest employee salary from an Employee table. Explain your answer. (Note: You may assume that there are at least 10 records in the Employee table.) View answer This can be done as follows: SELECT TOP (1) Salary FROM ( SELECT DISTINCT TOP (10) Sa...
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 &...
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...
Can you write a query that will help the owner of Cocoa Confections find the COUNT of all orders placed in 2016, by customer e-mail address, sorted descending? I've got an answer I need a hint Ace your SQL interview — Free mini-course Make sure you're prepared for the interview th...
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?
SQL INTERVIEW QUESTIONS AND ANSWERS 13 | P a g e 45.What is Self-Join? Self-join is query used to join a table to itself. Aliases should be used for the same table comparison. 46. What is Cross Join? Cross Join will return all records where each row from the first table is combin...
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 the query plan operators that perform the...
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. ...
i will try to explain most important PL/SQL Interview Questions that may ask in interview.PL/SQL is the Procedural Language Structured Query Language which will use to add the business logic. In this article I will try to give the brief description about different PL/SQL interview questions. ...
MINUS - returns all distinct rows selected by the first query but not by the second. UNION - returns all distinct rows selected by either query UNION ALL - returns all rows selected by either query, including all duplicates. Q. What is ROWID ?