Q #21) What are the ways of commenting in a PL/SQL code? Answer:Comments are the text which is included with the code to enhance readability and for the understanding of the reader. These codes are never executed. There are two ways to comment in PL/SQL: 1) Single line comment:This ...
WITH CTE AS ( SELECT Name, Salary, ROW_NUMBER() OVER (ORDER BY Salary DESC) AS RN FROM EMPLOYEE ) SELECT Name, Salary FROM CTE WHERE RN = 3; Conclusion: In conclusion, we covered the top 70+ SQL interview questions and answers in this article that help you prepare and crack SQL ...
Let’s take some database examples: An online phone book uses a database to store data of people, phone numbers, and other user details. Your internet service provider uses a database to manage billing, client-related issues, handle fault data, and so on. Database example 2. What is a...
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As a note, all the queries listed in the examples below are written in Microsoft SQL Server.Common SQL Interview Questions What are the set operators in SQL? What is cross join in SQL? How to fetch alternate records from the table. What is the difference between the RANK() and DENSE_...
12.What is Bit-map index?Explain with Example.(80 % Asked in PL SQL Interview Questions) Answer: 1.If Table contains the distinct values which are not more than 20 distinct values then user should go for Bit map indexes. 2.User should avoid the indexing on each and every row and do ...
SQL Interview Questions for beginners and professionals with sql, tutorial, examples, insert, update, delete, select, join, database, table, join
Learn what is Cursor in SQL with the help of examples. SQL cursor is a database object that is used to manipulate and traverse the result set of a SELECT query.
1 What is the default join in SQL? Give an example query? 1 Describe all the joins with examples in SQL? 1 What is Union and Union All ? Explain the differences? SQL ServerWhat is a database?A database is described as an organized way of collection of DATA. It is the collection...
Frequently Asked Questions And Answers Conclusion Was this helpful? Recommended Reading List Of PL/SQL Tutorials Tutorial #1:PL SQL Tutorial For Beginners With Examples | What Is PL/SQL(This Tutorial) Tutorial #2:PL SQL Data Types, Variables, Constants And Literals ...