Re: Review of: explain / allow collecting row counts without timing info

On 3.2.2012 22:51, Robert Haas wrote:
> On Fri, Feb 3, 2012 at 2:56 PM, Tomas Vondra <tv@fuzzy.cz> wrote:
>> OK, thanks for the explanation. I don't like the idea of subsets as it
>> IMHO makes it less obvious what options are enabled. For example this
>>
>>   EXPLAIN (ROWS) query...
>>
>> does not immediately show it's actually going to do ANALYZE.
> 
> Well, it isn't, if ANALYZE means rows + timing...

Yeah, sure. It depends on how you define ANALYZE. I see that as 'stats
collected at runtime' (in contrast to a query plan, which is just a ...
well, plan).

>> but what if someone wants both at the same time? Maybe he could do
>>
>>  EXPLAIN (ROWS, BUFFERS)
>>
>> and treat that as a union of those subsets. I don't think it's worth it.
> 
> Yeah, I forgot that we'd have to allow that, though I don't think it
> would be a big deal to fix that.
> 
>> I surely can live with both solutions (mine or the one you proposed).
> 
> Let's wait and see if anyone else has an opinion.

Sure. And thanks for your feedback!

Tomas