What Is Upsert Operation

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.

What is UPSERT command?

The UPSERT command inserts rows that don’t exist and updates the rows that do exist. The Word UPSERT is a fusion of the words UPDATE and INSERT. UPSERT was officially introduced in the SQL:2003 standard.

What is insert ignore into?

The INSERT IGNORE command keeps the first set of the duplicated records and discards the remaining. The REPLACE command keeps the last set of duplicates and erases out any earlier ones. Another way to enforce uniqueness is to add a UNIQUE index rather than a PRIMARY KEY to a table.