Hi, all: I'm using the es-adapter to do some aggregating,such like count(),sum(),avg()..... BUT, these ops will generate new virtual column，maybe something was done by calcite itself to deduce appropriate datatype for this? I saw some description in http://calcite.apache.org/docs/reference.html: "Calcite deduces the parameter types and result type of a function from the parameter and return types of the Java method that implements it. " So the question is does this matter?
Thanks for any reply. Best Regards.
