Hi all,
We've been using boolean types in partition values (not the best idea,
I know), and we've noticed a few inconsistencies around casting:
select cast('true' as boolean), cast('false' as boolean), cast(true as
string), cast(false as string), cast(cast(false as string) as boolean)
from test
true true TRUE FALSE true
The current logic in UDFToBoolean is that a string is false if it's
empty, and true otherwise. This isn't mirrored in UDFToString(), and
hence the inconsistency above.
I'm happy to file a JIRA to change this to something more reasonable,
but I guess this would break backwards compatibility. What are
people's opinions on this?
Cheers,
Phil.
