Câu 53: Databricks Certified Data Engineer Professional
A Databricks SQL dashboard has been configured to monitor the total number of records present in a collection of Delta Lake tables using the following query pattern:SELECT COUNT (*) FROM table -Which of the following describes how results are generated each time the dashboard is updated?
Nội dung câu hỏi
A Databricks SQL dashboard has been configured to monitor the total number of records present in a collection of Delta Lake tables using the following query pattern:SELECT COUNT (*) FROM table -Which of the following describes how results are generated each time the dashboard is updated?
Các lựa chọn
Đáp án được giữ gọn theo nhãn A, B, C, D trong phần bình chọn tương tác.
- A. The total count of rows is calculated by scanning all data files
- B. The total count of rows will be returned from cached results unless REFRESH is run
- C. The total count of records is calculated from the Delta transaction logs — đáp án hiện tại
- D. The total count of records is calculated from the parquet file metadata
- E. The total count of records is calculated from the Hive metastore
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