Answer: 1) Join tables into one table; 2) Use nested repeated fields, 1) Use nested repeated fields; 2) Use a partitioned table

Denormalizing data in BigQuery can be achieved through two primary methods. The first method involves combining tables into a single table, which simplifies queries by reducing the need for joins. The second method leverages BigQuery's support for nested and repeated fields, allowing for a more natural representation of hierarchical data structures, such as sales orders with line items. These approaches enhance query performance and data accessibility. For more details, refer to [BigQuery Data Warehouse Solutions](https://cloud.google.com/solutions/bigquery-data-warehouse#denormalizing_data).

Author: LeetQuiz Editorial Team