How can one prevent the occurrence of duplicate records when uploading a CSV file into BigQuery?

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To prevent the occurrence of duplicate records when uploading a CSV file into BigQuery, you can use the "INSERT " command with the "IGNORE" keyword. This command will only insert new records that do not already exist in the table and ignore the ones that are duplicates.

Another approach is to use a primary key or a unique index on one or more columns in the table to prevent duplicates during the upload process. This will ensure that each record in the CSV file corresponds with a unique record in the table, and any duplicates will be automatically filtered out during the upload process.

Lastly, you can use a third-party tool such as Talend or Apache NiFi that includes built-in functionality to deduplicate records during the upload process. This will help ensure that only unique records are uploaded to BigQuery.