Understanding Oracle Operators: Beginner-Level Quiz

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

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.

In the results sets of the SELECT statements inside the UNION ALL, the result sets must contain fields of a ___ type.

The ______ Operator in Oracle is used with the WHERE clause to search for a specific pattern in a given string. The string pattern contains wildcard characters that represent missing characters.

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

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

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

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

According to Oracle, the ____ operator returns all rows that are not returned in the second SELECT statement from the first SELECT statement.

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.

As part of a UNION operation, individual SELECT statements must have ___ fields and similar types of data in their result sets.

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

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

When you run several SELECT statements in Oracle, you can use the ____ Operator to return the results.

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

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

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

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

All set operators have equal precedence. True or False?

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

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