DATABASE SYSTEMS-MINDTAPV2.0
DATABASE SYSTEMS-MINDTAPV2.0
13th Edition
ISBN: 9780357427873
Author: Coronel
Publisher: CENGAGE L
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Chapter 7, Problem 12RQ

Explanation of Solution

Subquery:

Any SQL query can be written in the sub query approach.

  • The SQL subquery returns one or more column as the result.
    • Most SQL systems return a pair wise joining of one and only one column in an inner query with one column of an outer query.
    • The data displayed form the table referenced in outer query only.

Characteristics of subquery:

Some of the characteristics of subquery are as follows:

  • It is a query written inside another query...

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Chapter 7 Solutions

DATABASE SYSTEMS-MINDTAPV2.0

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