SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 2)
    Asterisk
    Literal \'original\' (alias orig)
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test2
   ExpressionList (children 2)
    OrderByElement (children 3)
     Identifier a
     Literal UInt64_20
     Literal UInt64_4
    OrderByElement (children 3)
     Identifier b
     Literal UInt64_15
     Literal UInt64_7
