| From: | Euler Taveira de Oliveira <euler(at)timbira(dot)com> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: explain analyze rows=%.0f |
| Date: | 2009-05-29 03:00:37 |
| Message-ID: | 4A1F4FD5.7060204@timbira.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Robert Haas escreveu:
> I have always assumed that there is some very good reason why EXPLAIN
> ANALYZE reports the number of rows as an integer rather than a
> floating point value, but in reading explain.c it seems that the
> reason is just that we decided to round to zero decimal places. Any
> chance we could reconsider this decision? I often find myself wanting
> to know the value that is here called ntuples, but rounding
> ntuples/nloops off to the nearest integer loses too much precision.
>
Don't you think is too strange having, for example, 6.67 rows? I would confuse
users and programs that parses the EXPLAIN output. However, I wouldn't object
to add ntuples to an extended explain output (as discussed in the other thread).
--
Euler Taveira de Oliveira
http://www.timbira.com/
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Robert Haas | 2009-05-29 03:12:42 | Re: explain analyze rows=%.0f |
| Previous Message | andy | 2009-05-29 02:45:32 | Re: sun blade 1000 donation |