Since we are off-topic already, let join Don and Dan:
The Great Bridge website (http://www.greatbridge.com/technologies/features.html) says :
Coming Soon
The following features are currently in development for
PostgreSQL and will be available later this year:
write-ahead logging (or "redo" logging), outer joins,
and longer data row support. These features will keep
PostgreSQL ahead of the open source database pack, and
strengthen its capabilities for mission critical deployment.
So they are the ones saying that Outer Joins are important for mission critical deployment 😊 Here's the e-mail to contact them:
dave@greatbridge.com.