SOQL and SOSL Reference

Introduction to SOQL and SOSL
Salesforce Object Query Language (SOQL)
Typographical Conventions in This Document
Quoted String Escape Sequences
Reserved Characters
Alias Notation
SOQL SELECT Syntax
SELECT
TYPEOF
USING SCOPE
WHERE
Comparison Operators
Logical Operators
Date Formats and Date Literals in WHERE
Filter on Polymorphic Relationship Fields
Query Multi-Select Picklists
Use null in WHERE
WITH
GROUP BY
HAVING
ORDER BY
LIMIT
OFFSET
FOR VIEW and FOR REFERENCE
UPDATE
FOR UPDATE
SOQL SELECT Examples
SOQL SELECT Functions
Relationship Queries
Change the Batch Size in Queries
SOQL Limits on Objects
Syndication Feed SOQL and Mapping Syntax
Location-Based SOQL Queries
Async SOQL
Salesforce Object Search Language (SOSL)
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Logical Operators

Logical operators can be used in the field expression of the WHERE clause in a SOQL query. These operators are AND, OR, and NOT.

The following table lists the logical operator values that are used in fieldExpression syntax:

Operator Syntax Description
AND fieldExpressionX AND fieldExpressionY true if both fieldExpressionX and fieldExpressionY are true.
OR fieldExpressionX OR fieldExpressionY true if either fieldExpressionX or fieldExpressionY is true.

In a WHERE clause that uses OR, records are returned even if the foreign key value in a record is null.

1SELECT Id FROM Contact WHERE LastName = 'Young' or Account.Name = 'Quarry'
NOT not fieldExpressionX true if fieldExpressionX is false.

There is also a comparison operator NOT IN, which is different from this logical operator.