Apex Developer Guide

Apex Developer Guide
Getting Started with Apex
Writing Apex
Running Apex
Invoking Apex
Apex Transactions and Governor Limits
Using Salesforce Features with Apex
Actions
Approval Processing
Authentication
Chatter Answers and Ideas
Use Cases for the CommercePayments Namespace
Connect in Apex
Moderate Chatter Private Messages with Triggers
DataWeave in Apex (Beta)
Moderate Feed Items with Triggers
Experience Cloud Sites
Email
External Services
Flows
Metadata
Permission Set Groups
Platform Cache
Salesforce Knowledge
Salesforce Files
Salesforce Connect
Apex Considerations for Salesforce Connect External Objects
Writable External Objects
External Change Data Capture Packaging and Testing
Get Started with the Apex Connector Framework
Key Concepts About the Apex Connector Framework
External IDs for Salesforce Connect External Objects
Authentication for Salesforce Connect Custom Adapters
Callouts for Salesforce Connect Custom Adapters
Paging with the Apex Connector Framework
queryMore with the Apex Connector Framework
Aggregation for Salesforce Connect Custom Adapters
Filters in the Apex Connector Framework
Considerations for the Apex Connector Framework
Apex Connector Framework Examples
Salesforce Reports and Dashboards API via Apex
Salesforce Sites
Support Classes
Territory Management 2.0
Integration and Apex Utilities
Debugging, Testing, and Deploying Apex
Apex Reference
Appendices
Glossary
PDF

Newer Version Available

This content describes an older version of this product. View Latest

Aggregation for Salesforce Connect Custom Adapters

If you receive a COUNT() query, the selected column has the value QueryAggregation.COUNT in its aggregation property. The selected column is provided in the columnsSelected property on the tableSelection for the DataSource.QueryContext.

The following example illustrates how to apply the value of the aggregation property to handle COUNT() queries.

An aggregate query can still have filters, so your query method can be implemented like the following example to support basic aggregation queries, with or without filters.