Hi gopal, Thanks for your response.
I does't understand about your solution. Could you please provide exact query? Regards, Ravi On Wed, Jun 3, 2015 at 2:23 PM, Gopal Vijayaraghavan <gop...@apache.org> wrote: > Hi, > > This particular case can be handled by a special case of the inner > equijoin. > > > ( recommend_ratings2.movieid = T_0.movieid_0 or > >((recommend_ratings2.movieid IS NULL) AND > (T_0.movieid_0 IS NULL))) > > Can be rewritten as a null-safe equi-join (i.e where movieid <=> > movieid_0, which is not SQL semantics). > > That however is a corner-case to workaround folks who want OR joins to > just handle NULL == NULL as a match. > > Cheers, > Gopal > > >
