MERGE INTO products p USING product_changes pc ON (p.product_id = pc.product_id) WHEN MATCHED THEN --当匹配上时进行更新操作 UPDATE SET p.product_type_id = pc.product_type_id, p.name = pc.name, p.description = pc.description, p.price = pc.price WHEN NOT MATCHED THEN --当不匹配上时进行插入操作 INSERT (p.product_id, p.product_type_id, p.name, p.description, p.price) VALUES (pc.product_id, pc.product_type_id, pc.name, pc.description, pc.price);