Apache Pinot

Hi team, the query to return the the earliest row’s timestamp `select DATETIMECONVERT(MIN(created), '1:MILLISECONDS:EPOCH', '1:SECONDS:SIMPLE_DATE_FORMAT:yyyy-MM-dd HH:mm:ss', '1:SECONDS') as min_created from delivery_order limit 1`  failed with the following error (in slack thread). The `created` column is of type:
```{
      "name": "created",
      "dataType": "LONG",
      "format" : "1:MILLISECONDS:EPOCH",
      "granularity": "1:MILLISECONDS"
    }```
Interestingly, the query `select DATETIMECONVERT(created, '1:MILLISECONDS:EPOCH', '1:SECONDS:SIMPLE_DATE_FORMAT:yyyy-MM-dd HH:mm:ss', '1:SECONDS') as min_created from delivery_order limit 1` without `MIN()` works fine. May I have some advice? Thanks.

```ProcessingException(errorCode:450, message:InternalError:
java.io.IOException: Failed : HTTP error code : 500
	at org.apache.pinot.controller.api.resources.PinotQueryResource.sendPostRaw(PinotQueryResource.java:302)
	at org.apache.pinot.controller.api.resources.PinotQueryResource.sendRequestRaw(PinotQueryResource.java:340)
	at org.apache.pinot.controller.api.resources.PinotQueryResource.getQueryResponse(PinotQueryResource.java:222)
	at org.apache.pinot.controller.api.resources.PinotQueryResource.handlePostSql(PinotQueryResource.java:137)
	at sun.reflect.GeneratedMethodAccessor117.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:52)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:124)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:167)
	at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:219)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:79)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:469)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:391))```