Re: Nested xmlagg doesn't give a result 9.2.3

I wonder if there's a difference in the implementation(s) of readline buffering?

----- Original Message -----
From: Peter Kroon <plakroon(at)gmail(dot)com>
To: Lou Picciano <loupicciano(at)comcast(dot)net>
Cc: Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, pgsql-bugs(at)postgresql(dot)org
Sent: Tue, 19 Feb 2013 15:28:47 -0000 (UTC)
Subject: Re: [BUGS] Nested xmlagg doesn't give a result 9.2.3

Exceeding length 4679 is a problem. Query results(length) equal or below this number succeed.

2013/2/19 Peter Kroon <plakroon(at)gmail(dot)com>
When there are more then 88 rows in the table like 595 I can run the query with success when using: WHERE id BETWEEN 1 AND 88;
Using LIMIT 88 fails -> returns nothingSelecting all fails as well.

2013/2/19 Peter Kroon <plakroon(at)gmail(dot)com>
When there are in __table_to_table more than 88 rows nothing gets returned, otherwise the query rolls out fine.

2013/2/19 Peter Kroon <plakroon(at)gmail(dot)com>
It appears to be a Windows issue only.I'll try to post some code.

2013/2/19 Lou Picciano <loupicciano(at)comcast(dot)net>
Seems your testing from different environments like that could easily add any mix of libpq client libraries into the equation (??)
(Are both test machines running the same version of pgAdmin? and are both connecting using the libpq installed with them?)

We have plenty of experience with clients reporting varying behavior from our 'applications', when it turns out they've 'hooked into' an unexpected version of the libpq client without, for example, SSL support built in, or Kerberos, or... This often happens after the client has unwittingly modified his environment in some way, sometimes after installing software.

While the 'support libraries' issues above have no bearing on your case, of course, I certainly don't know enough to know that the different versions of libpq don't present xmlagg output differently!

The experts here will weigh in.

Lou Picciano

----- Original Message -----
From: Peter Kroon <plakroon(at)gmail(dot)com>

Sent: Tue, 19 Feb 2013 11:52:37 -0000 (UTC)
Subject: Re: [BUGS] Nested xmlagg doesn't give a result 9.2.3

> When I'm on the sql machine via localhost or 192.168.1.100 I'm getting results.
I mean when I'm physically behind the machine and login via pgadmin using localhost or 192.168.1.100 then I get results.When I'm on another machine and login via pgadmin(192.168.1.100) then I get no results.Not sure what to think of this...

2013/2/19 Peter Kroon <plakroon(at)gmail(dot)com>
>Don't you have for example problems with the client application you use?
Yes, with 1 table only. I'm not getting any results.When I'm on the sql machine via localhost or 192.168.1.100 I'm getting results.

2013/2/19 Michael Paquier <michael(dot)paquier(at)gmail(dot)com>

On Tue, Feb 19, 2013 at 5:50 PM, Peter Kroon <plakroon(at)gmail(dot)com> wrote:
Also no result with FROM __my_table LIMIT 1;I'm having correct results with PG 9.2 by using either xmlagg or xmlelement.

For example:
postgres=# SELECT xmlelement(name el_name, id) FROM __table LIMIT 1;
xmlelement
----------------------
<el_name>1</el_name>
Or:
postgres=# SELECT xmlagg(xmlelement(name el_name, id)) FROM __table;

xmlagg
------------------------------------------
<el_name>1</el_name><el_name>2</el_name>
(1 row)

Btw, such simple tests would have failed on the buildfarm for regression xml.sql, so this looks to be an error in your environment.

Don't you have for example problems with the client application you use?
--
Michael