[Dbix-class] Possible problem with prefetch

[Will Hawes]

luke saunders wrote:
> You're dead on Will - that makes it work perfectly.
> 

Good to hear.

It took me a few minutes to track down the docs for the join_type 
attribute (in ResultSource.pm). I think it's an area that could be 
documented better and will look at improving things. To that end it 
would be interesting to hear which docs you read before posting, i.e. 
where you would have expected to find the answer.