Jackie-Jiang commented on issue #12721:
URL: https://github.com/apache/pinot/issues/12721#issuecomment-2019422882

   It is documented here: 
https://docs.pinot.apache.org/configuration-reference/schema#datetimefieldspec
   The root cause is that time value and format doesn't match. We cannot detect 
that upfront without having the values available, thus not able fail the schema 
validation. We can potentially not fail the query if the pruning logic throws 
exception, but it will still throw exception if this column is used as time 
column (not sure if it can fail in other places). For timestamp value, the 
format should be `TIMESTAMP`. We can add a validation for timestamp data type.


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