SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function mapPopulateSeries (children 1)
     ExpressionList (children 2)
      Literal Array_[UInt64_3, UInt64_4]
      Function tupleElement (children 1)
       ExpressionList (children 2)
        Identifier map
        Literal UInt64_2
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier map_test