Oracle SQL Queries And Subqueries: Beginner-Level Quiz

Oracle Queries and Subqueries

Welcome to the "Oracle SQL Queries" quiz! This quiz is designed to test your knowledge of essential SQL concepts and commands used in Oracle Database. You'll encounter a variety of questions covering data retrieval, manipulation, and management techniques. From basic queries to more advanced operations, this quiz will challenge your understanding and help you strengthen your skills in SQL. Get ready to dive in and see how well you know Oracle SQL!

1 / 20

Which of the following is a method for writing a sub-query in a main query?

2 / 20

Which of the following clause is mandatorily used in a sub-query?

3 / 20

There is no effect on the _____ of the table with the TRUNCATE TABLE statement.

4 / 20

Oracle has a DELETE statement that is used to delete a record from a table or multiple records from a table. True or False?

5 / 20

Which command is used to remove a table from the database?

6 / 20

The FROM clause must contain at least ____ table.

7 / 20

Oracle database supports ____.

8 / 20

In the TRUNCATE statement, the ____ clause is omitted, as with the DELETE statement.

9 / 20

What will be the result of the following query: SELECT COUNT(DISTINCT department_id) FROM employees;?

10 / 20

Which clause is used to filter records in a SQL query?

11 / 20

What is the correct way to comment a single line in SQL?

12 / 20

To ___ records from a database, Oracle select queries are used.

13 / 20

What does the SQL keyword 'ORDER BY' do?

14 / 20

The TRUNCATE method is usually used when _____ is not necessary.

15 / 20

Multiple rows can be inserted using the Oracle ____ statement.

16 / 20

What type of join returns all records from the left table and matched records from the right table?

17 / 20

Which SQL function is used to calculate the average value of a numeric column?

18 / 20

Which of the following are the types of sub-queries

19 / 20

Which of the following SQL statements will return the first 5 rows from a query?

20 / 20

By putting the ____ keyword in a database, you can insert an element into a database in the simplest way.

Your score is

The average score is 75%

0%

Oracle SQL Queries and Subqueries focuses on writing and optimizing SQL queries to retrieve and manipulate data from Oracle databases.

It also covers basic SQL operations like SELECT, INSERT, UPDATE, and DELETE and other advanced techniques like using subqueries to solve complex data retrieval tasks.

This quiz is ideal for individuals looking to enhance their skills in writing and optimizing SQL queries and performing complex data retrieval tasks.

All the best!