Data Pipelines: Join Data Streams with ksqlDB

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#kafka #datapipeline #ksqldb #confluent #apachekafka
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such a presentation. informative and funny.

arunraj
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Do we need to pay in order to follow this course on confluent? I will like to try a personal project before deciding on how to pay for services.

diogennesthesinope
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Wish there was an option for a slightly more schemaless output. Like maybe you want to keep the source JSON intact, but add some new data to it in the destination topic (example: 4 key pieces of match criteria exist in every event, but the rest of the key value pairs/nested can be dynamic). Currently, looks like the entire schema has to be hard coded, so you lose data if an event comes with new key values. Slightly off topic, but something I'm running into.

JazzTechie
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the ksqldb query at 8:30 is wrong. it should be

CREATE STREAM RATINGS_WITH_CUSTOMER_DATA AS
SELECT R.*, C.*
FROM RATINGS R
INNER JOIN CUSTOMER C
ON R.USER_ID = C.USER_ID

jorickcaberio