hey, in newer druid version, post agg/agg operator is giving null for LongSum type if there is no data for that, previously it was returning 0, how do i set it to work as previously with newer druid version? @here

That is controlled by the

useDefaultValueForNull

property. You can read more about it here. https://druid.apache.org/docs/latest/configuration/#sql-compatible-null-handling

Thanks @Benjamin Hopp