natural_full_join.sql

AbsDataBase5.16 最新版

/*This SQL script uses Demos.abs database. 
  Please open ...\AbsoluteDatabase\Demos\Data\Demos.abs database file.
  This example illustrates use of FULL JOIN action with NATURAL option. 
  This query retrieves all event names and places where they happen. Venue is attached to event name if value of same named field is equal in both tables. If there is no corresponding venue for event, then NULL is placed beside it. Likewise, if a corresponding event for a venue couldn't be found, NULL is placed to the left of it.*/

select Event_Name, Venue
from Events natural full join Venues  
order by Event_Name, Venue