raghukn commented on issue #14924:
URL: https://github.com/apache/pinot/issues/14924#issuecomment-2631361488

   Thanks @mayankshriv -- Below is my usecase  (DeNormalizing table and its 
extension table)
   
   - Fact table Tab1 with PK ID1
   - Extension table of this, say TabX1 which shares the PK ID1 (but it is 
stored in a column in TabX1)
   - I stream data from above 2 tables into a single TOPIC in Kafka 
   
   Now, In Pinot Realtime table, I have  union of all columns from Tab1 and 
TabX1. Since these 2 tables share same value of PK, I can merge the rows using 
Partial Update behavior. It works fine, except for fact, that I am unable to 
remove any of the values previously set by send NULL in the payload.
   
   
   I agree what I am trying is a remote/complex case, but there must a way to 
UNSET values even with simple PARTIAL UPDATE flows, without needing to Send 
whole row all the times.
   


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