Short version, is there a way to implement an exclusive OR in a where clause?
The boolean<> operator will do the trick.
(x = y)<> (a = b)
regards, tom lane
Factoring in NULLable columns, that's:
(x IS NOT DISTINCT FROM y)<> (a IS NOT DISTINCT FROM b)
Cheers, David.
Thanks for the replies!
I should note ( for the mail list archives I guess ) that the above suggestions don't work. Both rows are returned whether I use OR or <>, though maybe I'm not understanding something. I'm not sure why <> would work either, as all I can find is <> is the same as !=, which is different than the fabled XOR I was hoping for. In fact they would never equal.
But in the end it looks like wrapper sql around my output using "select distinct.." should do the trick.