django/django — pull request #3806 by jarshwah (2014-12-28 22:18:50+00:00)
Title: Fixed #23753 -- Oracle failure with Coalesce

This fixes the Oracle errors on CI when mixing CharFields and TextFields. We cast each input to Coalesce to NCLOB when the output of the expression is expected to be TextField (database NCLOB). We can't do this with a converter because the inputs need to be cast, not just the output.