17, 2012 at 8:48 PM, HuangQi wrote:
> > About the second topic, so currently TABLESAMPLE is not implemented
> > inside Postgres? I didn't see this query before, but I googled it just
> now
> > and the query seems very weird and
> > interesting.
&
(Sorry, Daniel. Forgot to cc pgsql-hackers.)
Hi, Daniel
Thanks a lot for your response.
As I can see for now, in my FYP, as the acyclic schema has the property
that it has a join tree. I will check how many join trees it has and
investigate any best option for the RSN schema. If it does hav
Hi, all
I am a student of Computer Science and Applied Math in a university in
Singapore. I'm planning to join Google Summer Code 2012 on PostgreSQL. It's
quite an honor to join the postgresql hacker community.
I have some postgresql developing experience while doing my school
project. I'm do
On 28 June 2011 22:36, Alvaro Herrera wrote:
> Excerpts from HuangQi's message of lun jun 27 23:56:22 -0400 2011:
>
> > BTW, which email system are you using to send to postgres mailing
> list?
> > As you can keep the top-answering and maintain the title of your email
> with
> > [hackers] in
Hi,
I've been tracing the data structure in the query plan process for a
while. But then I found the data structure manipulation is really so
confusing. Could some guy tell me where could I find any guide on how to
figure out the process and data structure usage? Is there any good resource
hel
On 24 June 2011 23:21, Tom Lane wrote:
> Shigeru Hanada writes:
> > (2011/06/24 15:35), HuangQi wrote:
> >> I'm trying to debug a modification for the query planner. But I found it
> >> seems the data structure of my planned query is incorrect. I was try
2011/6/24 Shigeru Hanada
> (2011/06/24 15:35), HuangQi wrote:
> > Hi,
> > I'm trying to debug a modification for the query planner. But I found
> it
> > seems the data structure of my planned query is incorrect. I was trying
> to
> > print out the data s
Hi,
I'm trying to debug a modification for the query planner. But I found it
seems the data structure of my planned query is incorrect. I was trying to
print out the data structure by use the "p" command in gdb which is quite
inconvenient and takes time. May I know is there any embedded function
On 6 June 2011 21:57, Kevin Grittner wrote:
> HuangQi wrote:
>
> >>> (gdb) b qp_add_paths_to_joinrel
> >>> Breakpoint 1 at 0x1a6744: file joinpath.c, line 67.
> >>> (gdb) attach 23903
>
> > If I enter c, gdb will directly finish executing this
If I enter c, gdb will directly finish executing this process and current
query will finish. Furthermore, if I enter next query, gdb will not debug it
and stay in continue status.
On 6 June 2011 21:44, Robert Haas wrote:
> On Mon, Jun 6, 2011 at 3:43 AM, HuangQi wrote:
> > Hi,
>
Sorry, but recompile with this flag still doesn't work.
On 6 June 2011 15:46, Pavan Deolasee wrote:
> On Mon, Jun 6, 2011 at 1:13 PM, HuangQi wrote:
> > Hi,
> >I was using gdb to debug postgres. In order to debug the backend of
> > running query, I start post
Hi,
I was using gdb to debug postgres. In order to debug the backend of
running query, I start postgres first and use "select * from
pg_backend_pid()" to ask for backend pid. Then I start gdb in another bash
window with "gdb postgres" and attach the pid obtained above and set the
breakpoint. The
Thanks all for your ideas. Though wired, I reinstalled the Postgres and
tried again. This error message disappears. The parser now works good.
On 3 June 2011 01:13, Alvaro Herrera wrote:
> Excerpts from HuangQi's message of jue jun 02 11:17:21 -0400 2011:
> > Hi, thanks a lot for your ideas. But
June 2011 21:14, Heikki Linnakangas <
heikki.linnakan...@enterprisedb.com> wrote:
> On 02.06.2011 15:16, Andrew Dunstan wrote:
>
>> On 06/02/2011 03:28 AM, HuangQi wrote:
>>
>>> Hi,
>>> I'm doing a hacking project which hacks the gram.y file and some o
rc/include/parser/kwlist.h (depends on pg version)
>
> attention - keywords must be in alphabet order
>
> Regards
>
> Pavel Stehule
>
> 2011/6/2 HuangQi :
> > Hi,
> > I'm doing a hacking project which hacks the gram.y file and some
> other
>
Hi,
I'm doing a hacking project which hacks the gram.y file and some other
so that postgres can execute some query plan language to run a particular
plan. I did some modifications and try run it. It compiled and installed
successfully. But when I was trying to run a MergeJoin operation with
key
16 matches
Mail list logo
