Certified Data Engineer Associate Exam

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Question 99

A data engineer runs a statement every day to copy the previous day’s sales into the table transactions. Each day’s sales are in their own file in the location "/transactions/raw".

Today, the data engineer runs the following command to complete this task:

After running the command today, the data engineer notices that the number of records in table transactions has not changed.

What explains why the statement might not have copied any new records into the table?

The format of the files to be copied were not included with the FORMAT_OPTIONS keyword.

The COPY INTO statement requires the table to be refreshed to view the copied rows.

The previous day’s file has already been copied into the table.

The PARQUET file format does not support COPY INTO.

Correct Answer: C

The most plausible explanation for the change in the number of records not being observed is that the previous day's file has already been copied into the table. COPY INTO checks for new files that haven't been loaded yet, and if there are no new files, it won't add any new records. Therefore, the statement might not have copied any new records because there were no new files to copy.

Discussion

MDWPartnersOption: C

Repeated, correct.