Final answer:
A right anti-join SOQL query is used to exclude records from one object that do not have matching records in another related object based on a specified condition.
Step-by-step explanation:
In Salesforce Object Query Language (SOQL), a right anti-join query is used to exclude records from one object that do not have matching records in another related object based on a specified condition.
For example, let's say we have two objects: Account and Opportunity. To retrieve all accounts that do not have any associated opportunities, we can use a right anti-join query.
SELECT Id, Name FROM Account WHERE Id NOT IN (SELECT AccountId FROM Opportunity)