SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Function transform (alias x) (children 1)
     ExpressionList (children 4)
      Function toString (children 1)
       ExpressionList (children 1)
        Identifier number
      Literal Array_[\'2\', \'4\', \'6\']
      Literal Array_[UInt64_29, UInt64_20, UInt64_21]
      Function materialize (children 1)
       ExpressionList (children 1)
        Literal UInt64_22
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 1)
        Literal UInt64_10
   ExpressionList (children 1)
    Identifier x
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier x
