Answer: Java User-Defined Function (UDF)

The correct answer is D (Java User-Defined Function) because Snowflake's native functions do not include built-in PDF parsing capabilities. Java UDFs allow custom logic to process unstructured data like PDF files stored in stages. The community discussion shows 100% consensus on answer D with multiple upvoted comments referencing Snowflake documentation and quickstarts that demonstrate using Java UDFs for PDF content extraction. Option A (FLATTEN) is for semi-structured data, not PDF parsing. Option B (Window functions) are for analytical operations over rows. Option C (HyperLogLog) is for approximate distinct counting, unrelated to PDF processing.

Author: LeetQuiz Editorial Team