THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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It is a common use case to capture changes as they are made to data entities in a RDBMS into Kafka topics using Change Data Capture platform. These data entities typically have multiple one-to-many relationships between parent and child database tables which allows for the easy data management of these entities using SQL statements with foreign key table join.
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Streams falls short here and the workaround (group by - join - lateral view) is not well supported as well and is not in line with the idea of record based processing.
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