Understanding Oracle Operators: Beginner-Level Quiz

Oracle Operators Quiz

Welcome to the "Oracle Operators" quiz! This quiz will assess your understanding of various operators used in Oracle SQL, including arithmetic, comparison, and logical operators. Whether you're brushing up for an interview or enhancing your SQL skills, let's get started!

1 / 20

Hoe many types of operators are there in Oracle?

2 / 20

Which operator will be evaluated first in the following SELECT statement?

SELECT (2+3*4/2-5) FROM dual;

D. -

A. *

C. /

B. +

3 / 20

If a SQL statement contains multiple set operators, then Oracle Database evaluates them from the right to left unless parentheses explicitly specify another order. True or False?

True

False

4 / 20

Which is not a type of operator in Oracle?

Logical Operator

Set Operator

Sequential Operator

Special Operator

5 / 20

As SELECT statements have datasets, the MINUS operator ___ all the documents from the first dataset, then returns all documents from the second dataset.

Removes

Adds

Inserts

Updates

6 / 20

You can use the Oracle ____ operator if you don't want to remove duplicate data.

UNION ONE

UNION NONE

UNION MULTIPLE

UNION ALL

7 / 20

The _______ Operators in Oracle are used for performing mathematical calculations such as Addition, Subtraction, Multiplication, Module, and Division represented by the expected +, -, *(star or asterisk), %, and / forward slash symbols respectively on the given operand values.

Logical

Arithmetic

Relational

Assignment

8 / 20

When two or more Oracle Select statements are combined with the _____ operator, the result sets are combined.

UNITE

UNIQUE

UNION

None

9 / 20

Duplicates are removed by the UNION ALL operator. True or False?

True

False

10 / 20

UNION ALL combines the results from multiple ____ statements in Oracle.

CREATE

SELECT

INSERT

UPDATE

11 / 20

The UNION operator combines the results of two or more SELECT queries into a single result set – as if it came from a single query.

True

False

12 / 20

How many types of SET operators are there?

13 / 20

Duplicates are removed by the UNION ALL operator but not by the UNION operator. True or False?

True

False

14 / 20

The ORDER BY clause can be used to order the results of a query using the Oracle ____ operator.

UNION NONE

UNION ONE

UNION

None

15 / 20

After the UNION, the result set would only contain a ____ instance of it because Oracle removes duplicates.

Multiple

Triple

Single

Double

16 / 20

Duplicates are not removed by the UNION operator. True or False?

True

False

17 / 20

Oracle lets you combine two ____ statements and remove duplicate rows between them using the UNION operator.

UPDATE

DELETE

ALTER

SELECT

18 / 20

_______ operation preserves those that would have been lost in _______.

Outer join, natural join

Natural join, outer join

Left outer join, right outer join

Left outer join, natural join

19 / 20

In the case of UNION Operations, there must be the ___ number of expressions in both statements of the SELECT statement.

Same

Different

Multiple

None

20 / 20

Operators are used to expressing the conditions in Select statements. True or False?

True

False

Your score is

The average score is 0%

Oracle operators focus on the various operators used in Oracle SQL to perform operations on data, such as arithmetic, comparison, logical, set, and string operators.

These operators help to build complex queries by enabling filtering, combining, and transformation of data efficiently.

This quiz is ideally designed for database users who are aiming to master query-building techniques.

Best of luck!