| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | "'Bruce Momjian'" <bruce(at)momjian(dot)us> |
| Cc: | Amit Kapila <amit(dot)kapila(at)huawei(dot)com>, "'PostgreSQL-development'" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: 9.3 Beta1 status report |
| Date: | 2013-05-16 22:49:33 |
| Message-ID: | 2226.1368744573@sss.pgh.pa.us |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
"'Bruce Momjian'" <bruce(at)momjian(dot)us> writes:
> On Thu, May 16, 2013 at 08:38:59PM +0530, Amit Kapila wrote:
>> Reduce query processing overhead by avoiding insertion of useless plan nodes
>> OR
>> Improve performance of certain kind of queries by avoiding extra processing
>> of doing projection
>>
>> This applies to queries doing identity projection ("SELECT * FROM ...") for
>> partitioned tables.
> Uh, that's pretty complex for our release notes, and hard to understand
> for most users. All they will know is that PG is faster --- we don't
> document every speedup.
No, but this is user-visible if they look at EXPLAIN output, and people
might wonder why they were getting different results.
Possibly text like
Omit unnecessary Result and Limit nodes from query plans.
regards, tom lane
| From | Date | Subject | |
|---|---|---|---|
| Next Message | 'Bruce Momjian' | 2013-05-16 22:52:03 | Re: 9.3 Beta1 status report |
| Previous Message | John R Pierce | 2013-05-16 22:41:36 | Re: PLJava for Postgres 9.2. |