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where 'Where clause' used ?

Oracle 12c: SQL

3rd Edition

ISBN:9781305251038

Author:Joan Casteel

Publisher:Joan Casteel

Chapter2: Basic Sql Select Statements

Section: Chapter Questions

Problem 6RQ: How do you indicate that a column alias should be used?

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Concept explainers

Single Table

In a database management system, a single table is designed to obtain data of heterogeneous items. A single-table design with DynamoDB resolves the issue of raising multiple requests for the relevant data of an entity.

Question

where 'Where clause' used ?

Expert Solution

Step 1

Where clause

The Structured Query Language (SQL) WHERE clause is used when a condition is specified while fetching data from a single table or by joining with multiple tables.
If the given condition is satisfied, then only it returns a specific value from the table.
The WHERE clause is used to filter the records and fetching only the necessary records.
It is used to extract only particular records that satisfy a listed criterion from the table.

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