You can extend a data source view by adding calculated columns that are populated by custom expressions, adding new relationships between tables, replacing tables in the data source view with queries, and adding related tables 可以通過以下方式來擴展數據源視圖:添加由自定義表達式填充的計算列,在表之間添加新的關系,用查詢替換數據源視圖中的表以及添加相關表。