Teradata Parallel Data Pump

Chapter 3: Teradata TPump Commands
UPDATE Statement and Atomic Upsert
Example 9 (Valid Upsert UPDATE)
This example demonstrates a successful upsert statement that updates a row.
UPDATE Sales SET ItemCount = ItemCount + 1 WHERE (ItemNbr = 10 AND
SaleDate = '05/30/2005') ELSE INSERT INTO Sales (10, '05/30/2005', 1);
After all of the rules have been validated, the row with ItemNbr = 10 and SaleDate = '05/30/
2005' gets updated. A successful update of one row results.
Example 10 (Valid Upsert INSERT)
This example demonstrates a successful upsert statement that inserts a row.
UPDATE Sales SET ItemCount = ItemCount + 1 WHERE (ItemNbr = 20 AND
SaleDate = '05/30/2005') ELSE INSERT INTO Sales (20, '05/30/2005', 1);
After all of the rules have been validated and no row was found with Item = 20 and SaleDate =
'05/30/2005' for the UPDATE, a new row is inserted with ItemNbr = 20. A successful insert of
one row results.
194 Teradata Parallel Data Pump Reference