Self-paced Courses: [L2-DA] / [L2-DE] / [L2-DS] Data Analytics / Engineering / Science with KNIME Analytics Platform: Advanced

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This forum thread is for questions related to any of three KNIME self-paced courses:

  • [L2-DA] Data Analytics with KNIME Analytics Platform: Advanced
  • [L2-DE] Data Engineering with KNIME Analytics Platform: Advanced
  • [L2-DS] Data Science with KNIME Analytics Platform: Advanced

For example, if you need help with an exercise or have some feedback, please post it here!

You can access the courses here: [L2-DA], [L2-DE], and [L2-DS]. The link will direct you to the learning management system where you are required to log in.

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I’m encountering an error with the JSON Path node while trying to work on Hands-on Exercise - Part 4, specifically the 04_Part1_GET Request exercise workflow.

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The error persists even when using the provided solution workflow. Although the workflow execution is successful, I’m unable to access the configuration of the JSON Path node in the solution workflow.

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Can anyone help me with this issue?

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Found a solution: the GET request node wasn’t actually receiving any data. Selecting the ‘Trust all certificates’ checkbox seems to solve the problem.

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Hello, I have a problem on the L2 DA part 1 Flow variables and component exercise, I already finished L1 basic proficiency and want to continue on this but i do not know what you mean by " From the output table of the Processed Customer Data metanode, use the Row Aggregator node to find the total sale for each store. Use StoreID as the category column, and aggregate the sum of the column Price. WHERE is that table, I can not find it. Is there a table named processed customer data?

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@Andrei_Avram ,

If you run the “Processed Customer Data” node you will get the table,

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After that you use the Row Aggregator node to find the total sale for each store. Use StoreID as the category column, and aggregate the sum of the column Price.

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I hope this helps.

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When i press on it and try to open it, it doesn’t let me run the node.

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Hi @Andrei_Avram Thanks for reaching out and thanks @maahmudur for the answer!

@Andrei_Avram do you mean that you can’t run the metanode? If yes, you don’t need to open it. Just hover over it until the Execute button appears on the top and click on it. Does this help?

Best,
Lada
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yes i did that, when i press that button, nothing happens
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Hi @Andrei_Avram ,

On the screenshot that you sent it is being executed. Does it never get to the executed state? Could you please send the screenshot of what’s happening inside? Double click on the metanode to open the workflow inside.

Best,
Lada

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Hello,
When I open the metanode this opens

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Hi @Andrei_Avram,

If you click the Execute button, the content of the metanode should get executed. On the screenshot you sent, it looks like the Execute button wasn’t clicked. You can also try to click Execute all button inside of the metanode.

Best,
Lada