SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Identifier number
    Function arrayReduce (children 1)
     ExpressionList (children 3)
      Literal \'sumMap\'
      Function array (children 1)
       ExpressionList (children 1)
        Identifier a
      Function array (children 1)
       ExpressionList (children 1)
        Identifier b
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 2)
          ExpressionList (children 3)
           Function materialize (alias a) (children 1)
            ExpressionList (children 1)
             Literal Array_[UInt64_100, UInt64_100, UInt64_200]
           Function materialize (alias b) (children 1)
            ExpressionList (children 1)
             Literal Array_[UInt64_10, UInt64_20, UInt64_30]
           Identifier number
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             Function numbers (children 1)
              ExpressionList (children 1)
               Literal UInt64_10