SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 2)
    Literal \'test2\'
    Identifier number
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.numbers
   ExpressionList (children 1)
    Identifier number
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier number
