genzgd commented on issue #28014:
URL: https://github.com/apache/superset/issues/28014#issuecomment-2053693424

   @ivkhokhlachev -- I think it makes sense to remove the toDateTime as a 
wrapper for any functions that can take String arguments, but we'd have to 
validate that against older versions of ClickHouse.  That particular code is at 
least 5 years old and I suspect the behavior of those functions has changed.  
If the String conversion has been available for 2 or 3 years, we can remove 
that wrapper.
   
   Something like TIME_GRAIN_OVERRIDE_EXPRESSIONS might work, but it's not an 
area of Superset functionality I know much about.  (I work for ClickHouse Inc. 
on, among other things, the `clickhouse-connect` Python driver).  @villebro or 
other core Superset devs might have an opinion, but I wouldn't be comfortable 
implementing any significant outside of the ClickHouseEngineSpec.
   
   


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