Câu 85: Databricks Certified Data Engineer Professional

You are performing a join operation to combine values from a static userLookup table with a streaming DataFrame streamingDF. Which code block attempts to perform an invalid stream-static join?

1. A. userLookup.join(streamingDF, ["userid"], how="inner")
2. B. streamingDF.join(userLookup, ["user_id"], how="outer") — đáp án hiện tại
3. C. streamingDF.join(userLookup, ["user_id”], how="left")
4. D. streamingDF.join(userLookup, ["userid"], how="inner")
5. E. userLookup.join(streamingDF, ["user_id"], how="right")