Book code listing contains error in nestedJoin function

[stan-t]

Hello, I just wanted to point out an error in the book's code.

Please see the screen capture from the e-book. Lines 23-24 are missing the collect_list aggregation method.

The same code in Github, however, is correct (excerpted below):
resDf = resDf .groupBy(leftColumns) .agg( collect_list(col(TEMP_COL)).as(nestedCol));

Thanks.

[jgperrin]

Thanks for reporting this... Would you mind making a PR?

[stan-t]

@jgperrin Just to clarify, the error is in the BOOK. The code on GitHub is good. So unless I'm misunderstanding the request, I don't think there's anything to PR here.