2012/4/20 Tom Lane <tgl@sss.pgh.pa.us>:
> Vincenzo Romano <vincenzo.romano@notorand.it> writes:
>> 2012/4/20 Vincenzo Romano <vincenzo.romano@notorand.it>:
>>> 2012/4/20 Tom Lane <tgl@sss.pgh.pa.us>:
>>>> You might be able to use "DROP VIEW pg_temp.foo", which will either
>>>> drop a temp view of your own session or throw an error if there is none.
>
>> It works only if you have created at least one temporary object.
>> Until that the pg_temp "meta schema" doesn't resolve to a real schema
>> and the exception is thrown!
>
> I didn't say *which* error would get thrown ;-). If you are checking
> that you'd need to be prepared for both cases.
>
> regards, tom lane
... WHEN OTHERS THEN NULL
should be pretty safe to DROP a VIEW!