SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectIntersectExceptQuery (children 2)
   SelectWithUnionQuery (children 1)
    ExpressionList (children 1)
     SelectQuery (children 2)
      ExpressionList (children 1)
       Subquery (alias a) (children 1)
        SelectWithUnionQuery (children 1)
         ExpressionList (children 1)
          SelectIntersectExceptQuery (children 2)
           SelectWithUnionQuery (children 1)
            ExpressionList (children 1)
             SelectQuery (children 1)
              ExpressionList (children 1)
               Literal UInt64_5
           SelectQuery (children 1)
            ExpressionList (children 1)
             Literal UInt64_1
      ExpressionList (children 1)
       Identifier a
   SelectQuery (children 2)
    ExpressionList (children 1)
     Literal UInt64_5
    ExpressionList (children 1)
     Subquery (alias a) (children 1)
      SelectWithUnionQuery (children 1)
       ExpressionList (children 1)
        SelectIntersectExceptQuery (children 2)
         SelectWithUnionQuery (children 1)
          ExpressionList (children 1)
           SelectQuery (children 1)
            ExpressionList (children 1)
             Literal UInt64_5
         SelectQuery (children 1)
          ExpressionList (children 1)
           Literal UInt64_1
