Hi Martin,
The last mail i sent just is a show of some bug in MonetDB,
It demonstrated a realistic application of MonetDB in Internet Industry, which is the first time MonetDB applied in the Top 3 internet company ,a valuable example MonetDB applied to.

I just want to help improve MonetDB by fixing some little and serious bug , this is out of my passion for it.


Regards,
Meng
------------------ Original ------------------
From:  "Martin Kersten"<Martin.Kersten@cwi.nl>;
Date:  Thu, Aug 8, 2013 03:38 PM
To:  "users-list"<users-list@monetdb.org>;
Subject:  Re: monetdb lost column info when queryring

Dear Meng,

Could you please keep this mail channel free from very application specific issues!!!
It reaches many that don't have a clue about your application setting, nor the time
to help you in this. For them this turns into spam.

I urge you to scout locally for a database expert to help you debug your software.
In case of a potential bug, we are more then welcome to study the minimal, fully
documented and repeatable setup.

Furthermore, the mail list archive is a good source for additional information about
phenomenons observed.

regards, Martin

On 08/08/2013 09:21 AM, integrity wrote:
sql>select * from kbms_logserver_msg t where  command = 'CmdWxInfo' and logdate = '2013-08-06' and functionret <> '0' and servertime > '1375757230' limit 10;
+------------+-----------+--------------+-------------+----------+------------+---------------+------------+----------------+------------+------------+
| logdate    | command   | commandtype  | functionret | costtime | servertime | serverip      | serverport | clientip       | clientport | clienttype |
+============+===========+==============+=============+==========+============+===============+============+================+============+============+
| 2013-08-06 | CmdWxInfo | getwxinfoall |        -535 |    3032 | 1375757231 | 10.187.143.80 | 7000       | 10.153.130.228 |            |            |
| 2013-08-06 | CmdWxInfo | getwxinfoall |        -535 |    3032 | 1375757244 | 10.187.143.80 | 7000       | 10.153.130.228 |            |            |
| 2013-08-06 | CmdWxInfo | getwxinfoall |        -535 |    3030 | 1375757257 | 10.187.143.80 | 7000       | 10.153.130.229 |            |            |
| 2013-08-06 | CmdWxInfo | getwxinfoall |        -535 |    3032 | 1375757962 | 10.187.143.80 | 7000       | 10.153.130.229 |            |            |
| 2013-08-06 | CmdWxInfo | getwxinfoall |        -535 |    3030 | 1375757970 | 10.187.143.80 | 7000       | 10.153.130.228 |            |            |
| 2013-08-06 | CmdWxInfo | getwxinfoall |        -535 |       60 | 1375760693 | 10.187.143.80 | 7000       | 10.153.130.229 |            |            |
| 2013-08-06 | CmdWxInfo | getwxinfoall |        -535 |       60 | 1375760693 | 10.187.143.80 | 7000       | 10.153.130.228 |            |            |
| 2013-08-06 | CmdWxInfo | getwxinfoall |        -535 |       59 | 1375760693 | 10.187.143.80 | 7000       | 10.153.130.229 |            |            |
| 2013-08-06 | CmdWxInfo | getwxinfoall |        -535 |       63 | 1375760872 | 10.187.143.80 | 7000       | 10.153.130.229 |            |            |
| 2013-08-06 | CmdWxInfo | getwxinfoall |        -535 |       54 | 1375760872 | 10.187.143.80 | 7000       | 10.153.130.229 |            |            |
+------------+-----------+--------------+-------------+----------+------------+---------------+------------+----------------+------------+------------+
10 tuples (55.709ms)

sql>select * from kbms_logserver_msg t where  command = 'CmdWxInfo' and logdate = '2013-08-06' and functionret <> '0' and servertime = '1375757231' limit 10;
+------------+-----------+--------------+-------------+----------+------------+---------------+------------+----------------+------------+------------+
| logdate    | command   | commandtype  | functionret | costtime | servertime | serverip      | serverport | clientip       | clientport | clienttype |
+============+===========+==============+=============+==========+============+===============+============+================+============+============+
| 2013-08-06 | CmdWxInfo | getwxinfoall |        -535 |    3032 | 1375757231 | 10.187.143.80 | 7000       | 10.153.130.228 | 44328      |            |
+------------+-----------+--------------+-------------+----------+------------+---------------+------------+----------------+------------+------------+
1 tuple (52.761ms)
in the first query,when servertime > '1375757230' limit 10;clientport are all NULL.
while in the second query, servertime = '1375757231' ,clientport appeard again.
it proves that the clientport exist but just didn't appear in the query.


Thanks,
Meng


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