method
prefetch_primary_key?
![Some documentation Importance_1](https://d2vfyqvduarcvs.cloudfront.net/images/importance_1.png?1349367920)
prefetch_primary_key?(table_name = nil)
public
Should primary key values be selected from their corresponding sequence before the insert statement? If true, next_sequence_value is called before each insert to set the record’s primary key.