I am trying to create an MQT using the following select statement and
refresh immediate option
SELECT c1,
c2,
MIN(c3) AS c3,
MIN(c4) AS c4
FROM t1
WHERE c5= 'xyz'
GROUP BY c1,c2
error:
--------------------------------------------------------------------------------------------------------------------------------------
The command was processed as an SQL statement because it was not a
valid Command Line Processor command. During SQL processing it
returned:
SQL20058N The fullselect specified for the materialized query table is
not valid. Reason code = "4". SQLSTATE=428EC
db2 "? SQL20058N "
--------------------------------------------------------------------------------------------------------------------------------------
4 The fullselect must not contain references to functions that:
o depend on physical characteristics of the data, for example
DBPARTITIONNUM, HASHEDVALUE
o are defined as EXTERNAL ACTION
o are defined as LANGUAGE SQL, CONTAINS SQL, READS SQL DATA or
MODIFIES SQL DATA
Response
--------------------------------------------------------------------------------------------------------------------------------------
4 Correct the CREATE TABLE statement to ensure that no
unsupported functions are referenced.
--------------------------------------------------------------------------------------------------------------------------------------
Refresh deferred completes successfully.. Is there a limitation in db2
in selecting min's in a refresh immediate MQT? 4 5672
Raj wrote: I am trying to create an MQT using the following select statement and refresh immediate option SELECT c1, c2, MIN(c3) AS c3, MIN(c4) AS c4
FROM t1 WHERE c5= 'xyz' GROUP BY c1,c2
error: ---------------------------------------------------------------------- ---------------------------------------------------------------- The command was processed as an SQL statement because it was not a valid Command Line Processor command. During SQL processing it returned: SQL20058N The fullselect specified for the materialized query table is not valid. Reason code = "4". SQLSTATE=428EC
db2 "? SQL20058N " ---------------------------------------------------------------------- ---------------------------------------------------------------- 4 The fullselect must not contain references to functions that:
o depend on physical characteristics of the data, for example DBPARTITIONNUM, HASHEDVALUE
o are defined as EXTERNAL ACTION
o are defined as LANGUAGE SQL, CONTAINS SQL, READS SQL DATA or MODIFIES SQL DATA
Response ---------------------------------------------------------------------- ---------------------------------------------------------------- 4 Correct the CREATE TABLE statement to ensure that no unsupported functions are referenced. ---------------------------------------------------------------------- ----------------------------------------------------------------
Refresh deferred completes successfully.. Is there a limitation in db2 in selecting min's in a refresh immediate MQT?
Indeed there is. From the CREATE TABLE documentation:
When a GROUP BY clause is specified, the following considerations apply:
When REFRESH IMMEDIATE is specified:
[... lots of other rules ...]
* The supported column functions are SUM, COUNT, COUNT_BIG and
GROUPING (without DISTINCT). The select list must contain a COUNT(*) or
COUNT_BIG(*) column. If the materialized query table select list
contains SUM(X), where X is a nullable argument, the materialized query
table must also have COUNT(X) in its select list. These column
functions cannot be part of any expressions.
* A HAVING clause is not allowed.
[... lots more rules ...]
Sorry! Looks like you'll have to stick with DEFERRED unless there's
another way around this?
Dave.
--
Hi Raj,
I think
SELECT c1,
c2,
MIN(c3) AS c3,
MIN(c4) AS c4
COUNT(*) as count
FROM t1
WHERE c5= 'xyz'
GROUP BY c1,c2
should work. The COUNT(*) is an obligation in your case in immediate mode.
If you don't want it, you need to use DEFERRED.
Hope this helps,
JM
"Dave Hughes" <da**@waveform. plus.com> a écrit dans le message de
news:44******** *************** @ptn-nntp-reader03.plus.n et... Raj wrote:
I am trying to create an MQT using the following select statement and refresh immediate option SELECT c1, c2, MIN(c3) AS c3, MIN(c4) AS c4
FROM t1 WHERE c5= 'xyz' GROUP BY c1,c2
error: ---------------------------------------------------------------------- ---------------------------------------------------------------- The command was processed as an SQL statement because it was not a valid Command Line Processor command. During SQL processing it returned: SQL20058N The fullselect specified for the materialized query table is not valid. Reason code = "4". SQLSTATE=428EC
db2 "? SQL20058N " ---------------------------------------------------------------------- ---------------------------------------------------------------- 4 The fullselect must not contain references to functions that:
o depend on physical characteristics of the data, for example DBPARTITIONNUM, HASHEDVALUE
o are defined as EXTERNAL ACTION
o are defined as LANGUAGE SQL, CONTAINS SQL, READS SQL DATA or MODIFIES SQL DATA
Response ---------------------------------------------------------------------- ---------------------------------------------------------------- 4 Correct the CREATE TABLE statement to ensure that no unsupported functions are referenced. ---------------------------------------------------------------------- ----------------------------------------------------------------
Refresh deferred completes successfully.. Is there a limitation in db2 in selecting min's in a refresh immediate MQT?
Indeed there is. From the CREATE TABLE documentation:
When a GROUP BY clause is specified, the following considerations apply:
When REFRESH IMMEDIATE is specified: [... lots of other rules ...] * The supported column functions are SUM, COUNT, COUNT_BIG and GROUPING (without DISTINCT). The select list must contain a COUNT(*) or COUNT_BIG(*) column. If the materialized query table select list contains SUM(X), where X is a nullable argument, the materialized query table must also have COUNT(X) in its select list. These column functions cannot be part of any expressions. * A HAVING clause is not allowed. [... lots more rules ...]
Sorry! Looks like you'll have to stick with DEFERRED unless there's another way around this?
Dave. --
Jean-Marc Blaise wrote: Hi Raj,
I think SELECT c1, c2, MIN(c3) AS c3, MIN(c4) AS c4 COUNT(*) as count FROM t1 WHERE c5= 'xyz' GROUP BY c1,c2
should work. The COUNT(*) is an obligation in your case in immediate mode. If you don't want it, you need to use DEFERRED.
This doesn't work - at least not for me. I think the problem is simply that
the MIN values cannot be automatically maintained when tuples in the table
T1 change. INSERT statements can easily be calculated, but for delete or
update operations, you'll have to scan the complete table in case that the
row with the minimum was deleted/updated and DB2 would have to find the new
min. (I don't know if this is the correct explanation, though.)
--
Knut Stolze
DB2 Information Integration Development
IBM Germany
Hi Knut,
My mistake :-), I buy your explanation.
Cheers,
JM
"Knut Stolze" <st****@de.ibm. com> a écrit dans le message de
news:e3******** **@lc03.rz.uni-jena.de... Jean-Marc Blaise wrote:
Hi Raj,
I think SELECT c1, c2, MIN(c3) AS c3, MIN(c4) AS c4 COUNT(*) as count FROM t1 WHERE c5= 'xyz' GROUP BY c1,c2
should work. The COUNT(*) is an obligation in your case in immediate
mode. If you don't want it, you need to use DEFERRED. This doesn't work - at least not for me. I think the problem is simply
that the MIN values cannot be automatically maintained when tuples in the table T1 change. INSERT statements can easily be calculated, but for delete or update operations, you'll have to scan the complete table in case that the row with the minimum was deleted/updated and DB2 would have to find the
new min. (I don't know if this is the correct explanation, though.)
-- Knut Stolze DB2 Information Integration Development IBM Germany 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) on the server because
of that. Our site will have an SSL certificate next week, so I would like
to use AIM instead of SIM, however, I don't know how to send data via POST
over https and recieve data from the Authorize.net server over an https...
|
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 to execute the code until the
browser send his reply to the header instruction. So an exit(); after each
redirection won't hurt at all
|
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 field is completed.
|
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.
354 roberto@ausone:Build/php-4.3.2> ldd /opt/php4/bin/php
libsablot.so.0 => /usr/local/lib/libsablot.so.0
libstdc++.so.5 => /usr/local/lib/libstdc++.so.5
libm.so.1 => /usr/lib/libm.so.1
|
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 column below.
The viewer can select states from the drop down lists above the other two
columns as well. If the viewer selects only one, only one column fills. If
the viewer selects two states, two columns fill. Etc.
I could, if appropriate, have...
| |
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 user comes back to a page where he had a submitted POST data
the browser keeps telling that the data has expired and asks if repost. How
to avoid that? I tried registering all POST and GET vars as SESSION vars but
|
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
http://www.mis.gla.ac.uk/biquery/training/
but each of the courses held have maximum of 8 people that could be
|
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 to :parameter
I dont like the idea of making the SQL statement on the fly without binding parameters as I
dont want a highly polluted SQL cache.
|
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 results of the picture
half the size. The PHP I have installed support 1.62 or higher. And
all I would like to do is take and image and make it fit a 3x3.
Any suggestions to where I should read or look would be appreciated.
|
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, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
|
by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
| |
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 tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
|
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
|
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 protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
|
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, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
|
by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
|
by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
| |
by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
| |