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190 Most Asked SQL Interview Questions | SQL Interview Q&A

    This article directs you to the 45 SQL interview questions that are asked most frequently, which can help you stand out during the interview process. Join our social media channels for this type of interview questions, career advice, engineering notes, and job-related content.

    SQL abilities are essential for the majority of professional categories because RDBMS is one of the most widely used databases to date. I'll introduce you to some of the most often posed SQL interview questions in this article (Structured Query Language). This article will teach you everything you need to know about SQL, Oracle, MS SQL Server, and MySQL databases.

Check:201 Knockout Answers to Tough Interview Questions 

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These are the most asked SQL Interview questions

1. What is the difference between “Stored Procedure” and “Function”?

2.What is difference between “Clustered Index” and “Non Clustered Index”?

3.What is the difference between the “DELETE” and “TRUNCATE” commands?

4.What is the difference between the “WHERE” clause and the “HAVING” clause?

5.What is the difference between “Primary Key” and “Unique Key”?

6. What is the difference between a “Local Temporary Table” and “Global Temporary

Table”?

7.What are super, primary, candidate and foreign keys?

8.What is the difference between primary key and unique constraints?

9.What is database normalization?

10.What is SQL?

11.What are the differences between DDL, DML and DCL in SQL?

12.What is the difference between having and where clause?

13.What is Join?

14.What is Identity?

15.What is a view in SQL? How to create one

16.What are the uses of view?

17.What is a Trigger?

18.What is a stored procedure?

19.What is the difference between Trigger and Stored Procedure?

20.What is a transaction? What are ACID properties?

21.What are indexes?

22.What are clustered and non-clustered Indexes?

23.What are Primary Keys and Foreign Keys?

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24.What is SQL ?

25. What are the different type of SQL or different commands in SQL?

26. What are the Advantages of SQL?

27. what is a field in a database ?

28.What is a Record in a database ?

29. What is a Table in a database ?

30.What is a database transaction?

31.What are properties of a transaction?

32.What is a Database Lock ?

33. What are the type of locks ?

34.What are the different type of normalization?

35.What is a primary key?

36.What is a Composite Key ?

37.What is a Composite Primary Key ?

38.What is a Foreign Key ?

39. What is a Unique Key ?

40.Define SQL Insert Statement ?

41. Define SQL Update Statement ?

42. Define SQL Delete Statement ?

43.What are wild cards used in database for Pattern Matching ?

44. Define Join and explain different type of joins?

45.What is Self-Join?

Complete Q&A download link in comment section

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