SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 3)
    Identifier dimension_1
    Identifier sum_metric_1
    Identifier sum_metric_2
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (alias subquery_1) (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 3)
          ExpressionList (children 2)
           Identifier dimension_1
           Function sum (alias sum_metric_1) (children 1)
            ExpressionList (children 1)
             Identifier metric_1
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier foo
          ExpressionList (children 1)
           Identifier dimension_1
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      Subquery (alias subquery_2) (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 3)
          ExpressionList (children 2)
           Identifier dimension_1
           Function sum (alias sum_metric_2) (children 1)
            ExpressionList (children 1)
             Identifier metric_2
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier bar
          ExpressionList (children 1)
           Identifier dimension_1
     TableJoin (children 1)
      ExpressionList (children 1)
       Identifier dimension_1
   Function less (children 1)
    ExpressionList (children 2)
     Identifier sum_metric_2
     Literal UInt64_20
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier dimension_1
