This example illustrates use of FULL JOIN action.
This query retrieves all event names and places where they happen. Venue is attached to event name if value of field "VenueNo" 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 e1."Event_Name", v2."Venue"
from "events" e1
fullouterjoin "venues" v2
on (e1."VenueNo" = v2."VenueNo")
orderby e1."Event_Name" asc, v2."Venue" asc
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