Using the Logical Operators : Logical Operators « Introduction « Oracle PL/SQL Tutorial

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Oracle PL/SQL Tutorial » Introduction » Logical Operators

1. 4. 1. Using the Logical Operators

There are three logical operators that may be used in a WHERE clause.
The logical operators allow you to limit rows based on logical conditions.
The logical operators are listed in the following table:

Operator	Description
x AND y	Returns true when both x and y are true
x OR y	Returns true when either x or y is true
NOT x	Returns true if x is false, and returns false if x is true

1. 4. Logical Operators
	1. 4. 1.	Using the Logical Operators
	1. 4. 2.	Use the AND operator to retrieve rows
	1. 4. 3.	Use the OR operator to retrieve rows
	1. 4. 4.	Use NOT in where clause
	1. 4. 5.	Understanding Operator Precedence

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