SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function finalizeAggregation (children 1)
     ExpressionList (children 1)
      Function CAST (children 1)
       ExpressionList (children 2)
        Literal \'AggregateFunction(categoricalInformationValue, Nullable(UInt8), UInt8)AggregateFunction(categoricalInformationValue, Nullable(UInt8), UInt8)\'
        Literal \'AggregateFunction(min, String)\'