SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Identifier s
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      Subquery (alias x) (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 1)
          ExpressionList (children 1)
           Function toUInt16 (alias s) (children 1)
            ExpressionList (children 1)
             Literal UInt64_1
     TableJoin (children 1)
      ExpressionList (children 1)
       Identifier s
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier s
   Set