12th Grade SQL & Querying Quizzes, Questions & Answers

12th Grade

Popular SQL & Querying Topics

Popular SQL & Querying Quizzes

Ready to test your knowledge of Oracle PL/SQL? This quiz guides you through essential topics such as cursor operations, variable declarations, exception handling, control statements, and the integration of SQL within PL/SQL...

Questions: 29 | Attempts: 24262 | Last updated: Dec 8, 2025

Sample Question
Select incorrect variable declarations.

Foo_number varchar2(10);

Foo_text number(10);

Foo_char char(1) := 'Y';

Foo_time date;

Foo_text varchar2(10) := 'hello world';

SQL & Pl/SQL Fundamentals Quiz

SQL & PL/SQL Fundamentals Quiz

This Oracle SQL and PL/SQL Practice Quiz for Developers is designed to strengthen your understanding of essential Oracle database concepts, query structures, constraints, DDL/DML operations, functions, privileges, and PL/SQL...

Questions: 33 | Attempts: 19501 | Last updated: Nov 21, 2025

Sample Question
Which SQL statement contains an error?

SELECT * FROM emp WHERE empid = 493945

SELECT empid FROM emp

SELECT empid FROM emp WHERE empid = 493945

SELECT empid WHERE empid = 56949 AND lastname='SMITH'

The Ultimate Server Query Language Quiz

A server query language is designed so that users can retrieve specific information from a database. As a software developer, you should have some knowledge of the use of such languages. Do you believe you understand SQL...

Questions: 42 | Attempts: 12997 | Last updated: Mar 22, 2025

Sample Question
Which SQL function is used to count the number of rows in a SQL query?

COUNT()

NUMBER()

SUM()

SQL Multiple Choice Questions With Answers

Are you looking for some SQL multiple-choice questions with answers to make your preparation level better for the upcoming exam? Try our quiz below and see if you know the basics of SQL programming language or not. SQL is the...

Questions: 20 | Attempts: 12519 | Last updated: Jun 17, 2025

Sample Question
Full form of RDBMS is

Regional district management system

Relational database management system

Regular database management system

Regular district machine system

SQL Server Quiz Questions And Answers

SQL server quiz questions and answers

Have you ever worked on an SQL server? What do you know about this database system? We have here this "SQL server quiz questions and answers" for you. Microsoft SQL Server is a DBMS developed by Microsoft for storing...

Questions: 25 | Attempts: 8281 | Last updated: Jun 22, 2025

Sample Question
Assuming UserProfile is a table containing a column Proession that accepts a NULL value. What is the result of the query below? SET ANSI_NULLS OFF SELECT Profession FROM UserProfile WHERE (Profession <> NULL).

Gives an error.

Returns all Professions that do not have null values.

<> is not an operator in SQL Server.

None of the above.

Pl/SQL Questions Exam Quiz!

PL/SQL Questions Exam Quiz!

The 'PL\/SQL Questions Exam Quiz!' assesses knowledge in PL\/SQL, covering topics from basic syntax to advanced database functions. It evaluates understanding of SQL functions, exception handling, and date manipulation, crucial...

Questions: 10 | Attempts: 4760 | Last updated: Apr 20, 2025

Sample Question
How many tables may be included with a join?

One

Two

Three

All the above

Recent SQL & Querying Quizzes

Oracle Pl/SQL Quiz

Oracle PL/SQL Quiz