Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> Is lossy and partial indexes the same?
No.
> I can't see how they were
> supposed to be used. The _only_ mention of this field I see in
> indexcmd.c, around line 132.
You missed a few then --- the most critical being in createplan.c.
AFAIK this is a working feature, and I am going to insist that you
keep your hands off it ...
regards, tom lane