Google Professional Data Engineer
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Your company is in the process of loading data from comma-separated values (CSV) files into Google BigQuery for analytics and data warehousing purposes. Although the data import operation completes successfully and the data seems to be fully imported, you have observed that the imported data does not match byte-for-byte with the original source CSV files. Considering this situation, what is the most probable reason for this discrepancy?
Your company is in the process of loading data from comma-separated values (CSV) files into Google BigQuery for analytics and data warehousing purposes. Although the data import operation completes successfully and the data seems to be fully imported, you have observed that the imported data does not match byte-for-byte with the original source CSV files. Considering this situation, what is the most probable reason for this discrepancy?
Explanation:
The correct answer is C. BigQuery supports UTF-8 encoding by default. If the CSV file is not UTF-8 encoded and no encoding is specified, BigQuery will attempt to convert the data to UTF-8. This conversion process can result in data discrepancies, causing the imported data to not match byte-for-byte with the source file.