topic Re: Trying to expand a json array into multiple columns in Activator

Trying to expand a json array into multiple columns

adamcodes716 — Tue, 16 Apr 2024 16:24:50 GMT

I am trying to set up an ingestion from an event hub to a KQL database. The difficulty in doing this is that there is a payload field that is a few levels down. I am trying to do this via the UI using an Event Processor to do this and I can go most of the way there. I can get to the point where I have a column with the payload.

Here is a simple example of that column: [{"name":"itemA", "section":"34", "key":"1234"}]

I could use "expand" here, but this breaks out the payload into 3 rows. The problem with this is that the "key" only exists in one of the rows and I have no way to tie it back to the other entries. Is there another option using Event Processor? I am trying to avoid doing this in code.

Re: Trying to expand a json array into multiple columns

miguel — Tue, 16 Apr 2024 16:31:16 GMT

Hey! This doesn't appear to be a question related to Dataflow Gen2. I'll try to reroute this to the appropriate forum.

Re: Trying to expand a json array into multiple columns

adamcodes716 — Tue, 16 Apr 2024 16:38:34 GMT

Oops, sorry about that. Please let me know if I need to re-create.

Re: Trying to expand a json array into multiple columns

adamcodes716 — Tue, 16 Apr 2024 18:26:37 GMT

I have re-posted this question in the Warehouse forum.