Look at the NOTICE:
siprebi=> SELECT max(tprestamo.cantmaxpres) FROM tprestamo t,usuarios
u,personas p,objetos o, tipodoc td WHERE t.cateusuario = u.cateusuario AND
u.persona = p.codigo AND p.docnum = 23622139 AND p.tdocu = td.codigo AND
td.nombre = 1 AND t.cateobjeto = o.cateobjeto AND o.ninventario = 29 AND
o.uacademi = 4;
NOTICE: Adding missing FROM-clause entry for table "tprestamo"
Now, look at the exact same query, only changing the field in max(), which is
the same, only that I use the alias of the table:
siprebi=> SELECT max(t.cantmaxpres) FROM tprestamo t,usuarios u,personas
p,objetos o, tipodoc td WHERE t.cateusuario = u.cateusuario AND u.persona =
p.codigo AND p.docnum = 23622139 AND p.tdocu = td.codigo AND td.nombre= 1
AND t.cateobjeto = o.cateobjeto AND o.ninventario = 29 AND o.uacademi = 4;
max
-----
Looks like a bug.
siprebi=> select version();
version
------------------------------------------------------------------------------
PostgreSQL 7.3.2 on sparc-unknown-linux-gnu, compiled by GCC gcc (GCC) 3.2..3
(1 row)
--
10:33:01 up 17 days, 17:55, 3 users, load average: 0.34, 0.41, 0.41
-----------------------------------------------------------------
Martín Marqués | select 'mmarques' || '@' || 'unl.edu.ar'
Centro de Telematica | DBA, Programador, Administrador
Universidad Nacional
del Litoral
-----------------------------------------------------------------
---------------------------(end of broadcast)---------------------------
TIP 8: explain analyze is your friend 2 1164
Martin Marques writes: Look at the NOTICE:
siprebi=> SELECT max(tprestamo.cantmaxpres) FROM tprestamo t,usuarios u,personas p,objetos o, tipodoc td WHERE t.cateusuario = u.cateusuario AND u.persona = p.codigo AND p.docnum = 23622139 AND p.tdocu = td.codigo AND td.nombre = 1 AND t.cateobjeto = o.cateobjeto AND o.ninventario = 29 AND o.uacademi = 4; NOTICE: Adding missing FROM-clause entry for table "tprestamo"
If you assign an alias to a table, the original table name becomes
invisible. Read the documentation.
--
Peter Eisentraut pe*****@gmx.net
---------------------------(end of broadcast)---------------------------
TIP 1: subscribe and unsubscribe commands go to ma*******@postgresql.org
No, it's right. In the first query the only time you refer to table
tprestamo is in the max() clause, all the other places use the alias "t" which
is *not the same thing*. The second refers to the table by the alias always.
So in the first query you are joining the tprestamo table twice, which is
probably not what you want.
Hope this helps,
On Sat, Nov 08, 2003 at 10:35:49AM -0300, Martin Marques wrote: Look at the NOTICE: siprebi=> SELECT max(tprestamo.cantmaxpres) FROM tprestamo t,usuarios u,personas p,objetos o, tipodoc td WHERE t.cateusuario = u.cateusuarioAND u.persona = p.codigo AND p.docnum = 23622139 AND p.tdocu = td.codigo AND td.nombre = 1 AND t.cateobjeto = o.cateobjeto AND o.ninventario = 29 AND o.uacademi = 4; NOTICE: Adding missing FROM-clause entry for table "tprestamo" Now, look at the exact same query, only changing the field in max(), which is the same, only that I use the alias of the table: siprebi=> SELECT max(t.cantmaxpres) FROM tprestamo t,usuarios u,personas p,objetos o, tipodoc td WHERE t.cateusuario = u.cateusuario AND u.persona = p.codigo AND p.docnum = 23622139 AND p.tdocu = td.codigo AND td.nombre = 1 AND t.cateobjeto = o.cateobjeto AND o.ninventario = 29 AND o.uacademi = 4; max ----- Looks like a bug. siprebi=> select version(); version ------------------------------------------------------------------------------ PostgreSQL 7.3.2 on sparc-unknown-linux-gnu, compiled by GCC gcc (GCC) 3..2.3 (1 row) -- 10:33:01 up 17 days, 17:55, 3 users, load average: 0.34, 0.41, 0.41 ----------------------------------------------------------------- Martín Marqués | select 'mmarques' || '@' || 'unl.edu.ar' Centro de Telematica | DBA, Programador, Administrador Universidad Nacional del Litoral ----------------------------------------------------------------- ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend
--
Martijn van Oosterhout <kl*****@svana.org> http://svana.org/kleptog/ "All that is needed for the forces of evil to triumph is for enough good men to do nothing." - Edmond Burke "The penalty good people pay for not being interested in politics is to be governed by people worse than themselves." - Plato
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.6 (GNU/Linux)
Comment: For info see http://www.gnupg.org
iD8DBQE/rPilY5Twig3Ge+YRAjmJAJ9cIRAswwBFl/nrxEoTrYI4BJUSpQCeNnPo
FEF8rs6cI4BOWig+8bZVZuo=
=hMXO
-----END PGP SIGNATURE----- This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
by: William C. White |
last post by:
Does anyone know of a way to use PHP /w Authorize.net AIM without using
cURL? Our website is hosted on a shared drive and the webhost company
doesn't installed additional software (such as cURL)...
|
by: Albert Ahtenberg |
last post by:
Hello,
I don't know if it is only me but I was sure that header("Location:url")
redirects the browser instantly to URL, or at least stops the execution of
the code. But appearantely it continues...
|
by: James |
last post by:
Hi,
I have a form with 2 fields.
'A'
'B'
The user completes one of the fields and the form is submitted.
On the results page I want to run a query, but this will change
subject to which...
|
by: Ollivier Robert |
last post by:
Hello,
I'm trying to link PHP with Oracle 9.2.0/OCI8 with gcc 3.2.3 on a Solaris9
system. The link succeeds but everytime I try to run php, I get a SEGV from
inside the libcnltsh.so library.
...
|
by: Richard Galli |
last post by:
I want viewers to compare state laws on a single subject.
Imagine a three-column table with a drop-down box on the top. A viewer
selects a state from the list, and that state's text fills the...
|
by: Albert Ahtenberg |
last post by:
Hello,
I have two questions.
1. When the user presses the back button and returns to a form he filled
the form is reseted. How do I leave there the values he inserted?
2. When the...
|
by: inderjit S Gabrie |
last post by:
Hi all
Here is the scenerio ...is it possibly to do this...
i am getting valid course dates output on to a web which i have designed
....all is okay so far , look at the following web url
...
|
by: Jack |
last post by:
Hi All,
What is the PHP equivilent of Oracle bind variables in a SQL statement, e.g.
select x from y where z=:parameter
Which in asp/jsp would be followed by some statements to bind a value...
|
by: Sandwick |
last post by:
I am trying to change the size of a drawing so they are all 3x3.
the script below is what i was trying to use to cut it in half ... I
get errors.
I can display the normal picture but not the...
|
by: Charles Arthur |
last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
|
by: emmanuelkatto |
last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud.
Please let me know.
Thanks!
Emmanuel
|
by: BarryA |
last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
|
by: nemocccc |
last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
|
by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...
|
by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...
|
by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing,...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new...
| |