Looked at this a bit ... do you think it's really a good idea to remove
the strategy number argument of comparePartial? The argument given in
the docs for it is that it might be needed to determine when to end the
scan, and that still seems plausible to me.
The description of extractQuery's extra_data parameter seems confusing
too. AFAICS it is incorrect, or at least misleading, to describe it as
void ** extra_data[]; it is really void ***extra_data, because there is
only one object there not an array.
regards, tom lane
