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How do you Upsert records in Apex?
Using the upsert operation, you can either insert or update an existing record in one call. To determine whether a record already exists, the upsert statement or Database method uses the record’s ID as the key to match records, a custom external ID field, or a standard field with the idLookup attribute set to true.
Is Upsert more expensive than INSERT?
It depends. A simple UPDATE that uses a primary key in the WHERE clause and updates only a single non-indexed field would likely be less costly than an INSERT on the same table.
How to populate lookup fields using external ID?
I have an lookup field in my opportunity object which is pointing to a custom object called Code__c. Code__c has an external Id field called Code_Source__c. When creating an opportunity once way of linking the opportunity to Code__c is by passing Id.
How to insert or update a record using an external ID?
You can use the sObject Rows by External ID resource to create records or update existing records (upsert) based on the value of a specified external ID field. If the external ID is not matched, then a new record is created according to the request body.
How to insert or update a record using an upsert?
A Line_Item__c record with a LineItemExtID__c value of 456 does not exist. This is the record that gets created and associated to the Merchandise__c record. Notice that the related Merchandise__c record is referenced using the Merchandise__c’s external ID field. The HTTP status code is 201 (Created).
What is the status code for external ID?
The request uses updates.json to specify the updated field values. In API version 45.0 and earlier, the HTTP status code is 204 (No Content) and there is no response body. If the external ID value isn’t unique, an HTTP status code 300 is returned, plus a list of the records that matched the query.