- SQL Tutorial
- SQL - Home
- SQL - Overview
- SQL - RDBMS Concepts
- SQL - Databases
- SQL - Syntax
- SQL - Data Types
- SQL - Operators
- SQL - Expressions
- SQL Database
- SQL - Create Database
- SQL - Drop Database
- SQL - Select Database
- SQL - Rename Database
- SQL - Show Databases
- SQL - Backup Database
- SQL Table
- SQL - Create Table
- SQL - Show Tables
- SQL - Rename Table
- SQL - Truncate Table
- SQL - Clone Tables
- SQL - Temporary Tables
- SQL - Alter Tables
- SQL - Drop Table
- SQL - Delete Table
- SQL - Constraints
- SQL Queries
- SQL - Insert Query
- SQL - Select Query
- SQL - Select Into
- SQL - Insert Into Select
- SQL - Update Query
- SQL - Delete Query
- SQL - Sorting Results
- SQL Views
- SQL - Create Views
- SQL - Update Views
- SQL - Drop Views
- SQL - Rename Views
- SQL Operators and Clauses
- SQL - Where Clause
- SQL - Top Clause
- SQL - Distinct Clause
- SQL - Order By Clause
- SQL - Group By Clause
- SQL - Having Clause
- SQL - AND & OR
- SQL - BOOLEAN (BIT) Operator
- SQL - LIKE Operator
- SQL - IN Operator
- SQL - ANY, ALL Operators
- SQL - EXISTS Operator
- SQL - CASE
- SQL - NOT Operator
- SQL - NOT EQUAL
- SQL - IS NULL
- SQL - IS NOT NULL
- SQL - NOT NULL
- SQL - BETWEEN Operator
- SQL - UNION Operator
- SQL - UNION vs UNION ALL
- SQL - INTERSECT Operator
- SQL - EXCEPT Operator
- SQL - Aliases
- SQL Joins
- SQL - Using Joins
- SQL - Inner Join
- SQL - Left Join
- SQL - Right Join
- SQL - Cross Join
- SQL - Full Join
- SQL - Self Join
- SQL - Delete Join
- SQL - Update Join
- SQL - Left Join vs Right Join
- SQL - Union vs Join
- SQL Keys
- SQL - Unique Key
- SQL - Primary Key
- SQL - Foreign Key
- SQL - Composite Key
- SQL - Alternate Key
- SQL Indexes
- SQL - Indexes
- SQL - Create Index
- SQL - Drop Index
- SQL - Show Indexes
- SQL - Unique Index
- SQL - Clustered Index
- SQL - Non-Clustered Index
- Advanced SQL
- SQL - Wildcards
- SQL - Comments
- SQL - Injection
- SQL - Hosting
- SQL - Min & Max
- SQL - Null Functions
- SQL - Check Constraint
- SQL - Default Constraint
- SQL - Stored Procedures
- SQL - NULL Values
- SQL - Transactions
- SQL - Sub Queries
- SQL - Handling Duplicates
- SQL - Using Sequences
- SQL - Auto Increment
- SQL - Date & Time
- SQL - Cursors
- SQL - Common Table Expression
- SQL - Group By vs Order By
- SQL - IN vs EXISTS
- SQL - Database Tuning
- SQL Function Reference
- SQL - Date Functions
- SQL - String Functions
- SQL - Aggregate Functions
- SQL - Numeric Functions
- SQL - Text & Image Functions
- SQL - Statistical Functions
- SQL - Logical Functions
- SQL - Cursor Functions
- SQL - JSON Functions
- SQL - Conversion Functions
- SQL - Datatype Functions
- SQL Useful Resources
- SQL - Questions and Answers
- SQL - Quick Guide
- SQL - Useful Functions
- SQL - Useful Resources
- SQL - Discussion
SQL Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to SQL. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - Consider the following schema −
STUDENTS(student_code, first_name, last_name, email,
phone_no, date_of_birth, honours_subject, percentage_of_marks);
Which of the following query would display all the students where the second letter in the first name is ‘i’?
A - select first_name from students where first_name like ‘_i%’;
B - select first_name from students where first_name like ‘%i_’;
C - select first_name from students where first_name like ‘%i%’;
D - select first_name from students where first_name like ‘_i_’;
Answer : A
Q 3 - You want to calculate the tax payable by the employees of an organization. If the employee gets a commission, then the tax would be calculated on commission plus salary, if the employee does not get any commission, then the tax would be calculated on salary only. Which function should you use for calculating tax?
Answer : B
Q 4 - Which of the following is not true about the MAX and MIN functions?
A - Both can be used for any data type.
B - MAX returns the maximum value.
Answer : D
Q 5 - You want to calculate the minimum percentage of marks obtained under each honours group students, where the minimum marks is more than the minimum marks in economics department. Under which clause should the subquery be?
Answer : C
Q 6 - Which of the following is not true about multiple-row subqueries?
A - Multiple row subqueries return multiple rows from the outer SELECT statement.
B - Multiple row subqueries return multiple rows from the inner SELECT statement.
C - Multiple row subqueries use multiple-row comparison operators.
Answer : B
Q 7 - Which of the following is NOT true about the SQL transaction control statements?
A - The COMMIT statement ends the current transaction and makes all data changes permanent.
B - The ROLLBACK statement ends the transaction and discards all the pending data changes.
Answer : C
Q 8 - Which of the following code will successfully delete the table LOCATIONS from the database?
Answer : A
Q 9 - Which of the following code will delete a sequence named loc_seq?
Answer : B
Q 10 - Which of the following is true about a role?
A - A role is a named group of related privileges.
B - It can be it can be created and assigned to a user.
To Continue Learning Please Login