[nehanarkhede]

Mind clarifying what you mean by changes to events?

If you create a STREAM or TABLE using KSQL, it makes sure that they are kept updated with every single event that arrives on the source Kafka topics.

That's what you'd expect in a true event-at-a-time Streaming SQL engine, which is what KSQL is.

[daddykotex]

Suppose you build a STREAM or TABLE from a topic and assume a field in the event is `id`. Later on, you introduce an update to this event where where your replace `id` by `user_id`, how is KSQL reacting?