DS 201: Exercise 3 – Partitions, 12th step in exercise
write a query to retrieve the video having a title of Cassandra Intro. Here the title column is not a part of partition key nor primary key. how to retrieve data in this case?
Build Cloud-Native apps with Apache Cassandra
GOT QUESTIONS from the Workshop? You're in the right place! Post a question here and we'll get you answers.
Click here for Week 8 Materials and Homework.
Follow us on Eventbrite to get notified when new workshops are scheduled!
This question was
closed
by
Erick Ramirez for the following reason: The question is answered, right answer was accepted
How do I retrieve data from the videos_by_tag table in exercise 3 of the DS201 course?
yes, you are correct, you cannot retrieve a video by title from this table, as title is not the partition key, unless you allow filtering (which scans the full table and is not performant).
CREATE TABLE videos_by_tag (
tag TEXT,
video_id UUID,
added_date TIMESTAMP,
title TEXT,
PRIMARY KEY ((tag), video_id)
);
The solution to this step calls this out (see the "Partitions - Solutions" pdf). It's an exercise to check your understanding, and you got it right.
Hope this helps!
Thanks for the clarification. Where can I find the "partitions - solutions" pdf.
you can download a zip with the exercises and solutions from the course page, I copy the link for you here:
https://s3.amazonaws.com/datastaxtraining/documents/DS201-Exercises.zip
7 People are following this question.
