Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> writes:
> I'm sitting in Alexey Ermakov's talk and he just said that the command
> in $SUBJECT is not documented ... do we need a separate blurb about it
> somewhere?
Hm ... at one time there was not any real expectation that the ALTER INDEX
reference page would tell you exactly which subforms of ALTER TABLE would
work on an index; it was mostly "try it and see". But now we probably
should try to cover all the cases there, including this one.
regards, tom lane