SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function arrayReduce (alias t) (children 1)
     ExpressionList (children 2)
      Literal \'median\'
      Function array (children 1)
       ExpressionList (children 1)
        Function toLowCardinality (children 1)
         ExpressionList (children 1)
          Function toNullable (children 1)
           ExpressionList (children 1)
            Literal UInt64_8
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier t
