How to Query the Lookup Filter Information Using SOQL in Salesforce

 To Query the lookup filter information we can use the LookupFilter object.

Note: Select the Tooling API option when you querying the data

Example:

Select id, Active, IsOptional, DeveloperName, SourceObject, TargetEntityDefinition.DeveloperName, SourceFieldDefinitionId, SourceFieldDefinition.DeveloperName From lookupFilter

Result: