How do I Upsert a list in Salesforce?

How do I Upsert a list in Salesforce?

Upsert Record in Apex

1. The upsert statement matches the sObjects with existing records by comparing values of one field.
2. You can specify a field to use for matching.
3. If you don’t specify a field name, the upsert statement uses the sObject’s ID to match the sObject with existing records in Salesforce.

How do you Upsert data loader?

Required Editions and User Permissions

1. Open the Data Loader.
2. Click Insert, Update, Upsert, Delete, or Hard Delete.
3. Enter your Salesforce username and password.
4. Choose an object.
5. To select your CSV file, click Browse.
6. Click Next.

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 does the upsert function in DML work?

Upsert: The upsert DML operation creates new records and updates sObject records within a single statement, using a specified field to determine the presence of existing objects, or the ID field if no field is specified.

How to create multiple sobjects in DML stack?

Here, that would be Contact__r. It might be more clear if you look at how it works if you set the value dynamically: you can either call set with the Id, or setSObject with the record. Also, note that you can always get the name of this relationship through the describe.

How does the sobject rows by external ID resource work?

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 specified value doesn’t exist, a new record is created. If a record does exist with that value, the field values specified in the request body are updated.

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.