SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function mapPopulateSeries (children 1)
     ExpressionList (children 3)
      Function array (children 1)
       ExpressionList (children 2)
        Function toUInt64 (children 1)
         ExpressionList (children 1)
          Literal UInt64_3
        Literal UInt64_4
      Function tupleElement (children 1)
       ExpressionList (children 2)
        Identifier map
        Literal UInt64_2
      Identifier n
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier map_test