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SQL

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SQL - Questions & Answers

7/12Technical Interview
14questions in this exercise
3 of 3page

Introduction Questions & Answers(14)

11

What does COALESCE do?

12

How do you find the nth highest salary?

13

What is a self join? Give an example.

14

How do you delete duplicate rows but keep one?

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Technical InterviewAll 12 topicsFilter topics

01C Language Basics16
02OOPs Concepts14
03Java15
04Python14
05Data Structures14
06DBMS14
07SQL14
08Operating Systems14
09Networking14
10Software Testing14
11Web Development14
12Cloud Computing14