SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Literal UInt64_1
   TablesInSelectQuery (children 3)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier rewrite
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier rewrite (alias y)
     TableJoin (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 1)
          ExpressionList (children 1)
           Literal UInt64_1
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier rewrite (alias z)
     TableJoin (children 1)
      Literal UInt64_1
   Set
