Selecting from Materialized Query Tables (DB2 UDB database)

When selecting what objects I wish to view in my Reports, I am unable to see any Materialized Query Tables in the list. I am able to see the "normal" Tables and Views, just not any Materilized Query Tables.
Please let me know what I need to set or customize in-order to see and then select fields from these.

Thanks everyone.
I was able to find the answer.
For the new report, in the "Create New Connections"...choose "OLE DB (ADO)" --> then "Microsoft OLE DB Providers for ODBC Drivers" --> click on the "Next" button --> choose the database --> then user/password details (..and so forth).

Similar Messages

How to Access DB2 MQT (Materialized Query Table) in Crystal 10

DB2 V8 has a new construct called a Materialized Query Table (MQT) that is essentially a table containing the data represented by a view. This MQT does not appear in the Database List in Crystal under Table, View or Synonym. I assume it is due to the Database Type in DB2 (M). How can I make Crystal recognize the MQT so I can use it in a report?

Hi Linda,
This question was posted internally and OLE dB is the work around but no version of CR was noted so not sure if this will work for you. If it doesn't work in CR 10 then you'll have to upgrade to a more current version.
Because MQT is new to DB2 Crystal 10 OLE dB driver may not know how to handle them.
Thank you
Don

Select from view -v- table

Hi Guys,
I was just hoping to get your opinion on something.
I have a procedure in Production that is taking longer and longer to finish and sticks on one certain section of code.
The code is an INSERT into the main dimension table.
This same procedure runs fine on TEST and the section of code completes an awful lot quicker.
The traffic on Production is a lot heavier and there have been applications developed by people other than myself which SELECT from this dimension table. I'm assuming, based on the fact the code in Test and Production are identical, that this increased traffic could be eating up the bandwith and slowing the jobs.
So, I was thinking - if I create Views and let the other applications hit the views as opposed to the main table, will this help speed it up. I did this before on a Teradata platform using a 'dirty read' which worked quite well but Oracle doesn't seem to offer this option.
What do you guys think? Could this work or do I need to take a different approach.
Thank You.

GerardMcL wrote:
I meant ordinary views.
I was wondering if there was a way of putting some locking code in or asking for a dirty read that would speed up the SELECT from the table?There is no such thing as a dirty read with Oracle -- Teradata, SQL Server, Sybase, IBM, etc., have different locking architectures where reads can block write and writes can block reads, and that is not an issue with Oracle.
If there's a query performance problem, which is what that will be if the SELECTs are slow, then if you could follow the following links, that will help diagnosis immensely:
[How to Post A Tuning Request|http://forums.oracle.com/forums/thread.jspa?threadID=863295&tstart=0]
And:
[When your Query takes too long|http://forums.oracle.com/forums/thread.jspa?messageID=1812597#1812597]
There is such as thing as stale reads, against Materialized Views, which are views that actually materialize and store the results of a query, and which then can subsequently be queried.

Can COPA pull values from material classification tables

Hi All,
I know COPA can pull values from standard SAP tables like material master tables (e.g. MARA) but can it also pull values from material classification table(s)?
Your help is greatly appreciated,
Points will be rewarded

Hi Kati,
In order to derive CO-PA chars from material classification view for a
specific material value you have to implement the CO-PA derivation exit
(include ZXKKEU11) accordingly. It's indeed table AUSP from which you
can get the corresponding value (field ATWRT) for each classifying
attribute (field ATINN). In order to find out the field name for each
ATINN number (so that the mapping to corresponding CO-PA chars can be
done in a sensible way) you have to select additionally the ATNAM value
from table CABN (for given ATINN number).
BR,
MLM

How to assign tasks in Approval Workflow to a set of users selected from a Lookup table

Hi all,
I am new to Project Server and I am using Project Server 2013 On premises deployement. Please help me on how to achieve the below scenario:
I have a requirement where, the initial PDP will have 2 fields (Reviewers and Approvers), wherein the engineer himself will select who the reviewer and approver from the Lookup tables.
Now I have to start task process with these selected people for approval.
Say for example , engineer has selected Alice and Bob as 2 reviewers, then
In the workflow I have :
Start Task process with
Project Data: Reviewers (which is giving error as
[System.ArgumentException: AssignedTo at Microsoft.Activities.Hosting.Runtime.Subroutine.SubroutineChild.Execute(CodeActivityContext context) at System.Activities.CodeActivity.InternalExecute(ActivityInstance instance, ActivityExecutor executor, BookmarkManager
bookmarkManager) at System.Activities.Runtime.ActivityExecutor.ExecuteActivityWorkItem.ExecuteBody(ActivityExecutor executor, BookmarkManager bookmarkManager, Location resultLocation) ]
Then I tried logging the value of Project Data: Reviewers, It logged the value as Alice, Bob (which looks pretty good),
Then I tried assigning only 1 person as Reviewer, then also I get the same error.
So can anybody please tell me where I went wrong. Is it not possible to fetch the data from the values selected as Project Data from the Lookup tables ? If not then what is the workaround I can use to achieve this ?
Thanks,
Shanky

Hi Paul,
Yes I am using SP designer for Workflows. And yes, You were right, there was a mismatch in the names of AD account and the Lookup table, now with 1 person selected from the lookup table it is assigning the task properly. However with multiple selection,
it is failing.
As Robert mentioned, the fetched value is a text as "Alice, Bob", which makes 2 usernames as a single text. So when I try to assign a task to this group, which returns value as "Alice, Bob", workflow fails to find such AD user, as it
is an invalid value.
So is there any way I can seperate this out to form 2 different username ? I checked for string extraction function in th Workflow, but nothing helped me for this scenario.
Any input will be helpful.
Thanks,
Shanky

Selecting from 2 different tables

is this possible?
i just want to select from two different tables in one select statement and they have the same WHERE clause

SELECT
a.pkggrp,
a.pkgtype,
a.area,
a.process,
a.ww,
count(a.ww) as LOTSGATED,
sum(a.samplesize) as SUMSAMPLESIZE,
sum(a.total_defects) as SUMTOTALDEFECTS,
sum(case a.auditresult when 'pass' then 1 else 0 end) COUNTPASS,
sum(case a.auditresult when 'fail' then 1 else 0 end) COUNTFAIL,
case sum(case a.auditresult when 'fail' then 1 else 0 end)
    when 0 then 0
else round(sum(case a.auditresult when 'fail' then 1 else 0 end) / count(a.ww) * 100,2)
    end LRR,
case sum(case a.auditresult when 'fail' then 1 else 0 end)
    when 0 then 0
else round(sum(case a.auditresult when 'fail' then 1 else 0 end) / sum(a.samplesize) * 1000000,0)
    end PPM,
count(c.itrnum)
FROM
t_prodproc_monitoring a, t_itr c
WHERE
a.ww=c.ww
and a.ww between 1 and 50
and c.ww between 1 and 50
GROUP BY
a.pkggrp,
a.pkgtype,
a.area,
a.process,
a.ww
ORDER BY
a.pkggrp,
a.pkgtype,
a.area,
a.process,
a.ww ascthis gave me a
"c". "ww": invalid identifier

SELECTing from a large table vs small table

I posted a question few months back about teh comparison between INSERTing to a large table vs small table ( fewer number of rows ), in terms of time taken.
The general consensus seemed to be that it would be teh same, except for teh time taken to update the index ( which will be negligible ).
1. But now, following teh same logic, I m confused why SELECTINg from a large table should be more time taking ("expensive" ) than SELECTing from a small table.
( SELECTing using an index )
My understanding of how Oracle works internally is this :
It will first locate the ROWID from teh B-Tree that stores the index.
( This operation is O(log N ) based on B-Tree )
ROWID essentially contains teh file pointer offset of teh location of the data in teh disk.
And Oracle simply reads teh data from teh location it deduced from ROWID.
But then the only variable I see is searching teh B-Tree, which should take O(log N ) time for comparison ( N - number of rows )
Am I correct above.
2. Also I read that tables are partitioned for performance reasons. I read about various partiotion mechanisms. But cannot figure out how it can result in performance improvement.
Can somebody please help

user597961 wrote:
I posted a question few months back about teh comparison between INSERTing to a large table vs small table ( fewer number of rows ), in terms of time taken.
The general consensus seemed to be that it would be teh same, except for teh time taken to update the index ( which will be negligible ).
1. But now, following teh same logic, I m confused why SELECTINg from a large table should be more time taking ("expensive" ) than SELECTing from a small table.
( SELECTing using an index )
My understanding of how Oracle works internally is this :
It will first locate the ROWID from teh B-Tree that stores the index.
( This operation is O(log N ) based on B-Tree )
ROWID essentially contains teh file pointer offset of teh location of the data in teh disk.
And Oracle simply reads teh data from teh location it deduced from ROWID.
But then the only variable I see is searching teh B-Tree, which should take O(log N ) time for comparison ( N - number of rows )
Am I correct above.
2. Also I read that tables are partitioned for performance reasons. I read about various partiotion mechanisms. But cannot figure out how it can result in performance improvement.
Can somebody please helpIt's not going to be that simple. Before your first step (locate ROWID from index), it will first evaluate various access plans - potentially thousands of them - and choose the one that it thinks will be best. This evaluation will be based on the number of rows it anticipates having to retrieve, whether or not all of the requested data can be retrived from the index alone (without even going to the data segment), etc. etc etc. For each consideration it makes, you start with "all else being equal". Then figure there will be dozens, if not hundreds or thousands of these "all else being equal". Then once the plan is selected and the rubber meets the road, we have to contend with the fact "all else is hardly ever equal".

No value is select from user define table

Hi ALL,
             i am using B1if , i am sending data B1 to isr , i am using user define table but problem no value is select from user define table .
my table ID is @SSRPOD
<payload operation="">
     <ns0:MT_POD_B1_System xmlns:ns0="http://xxxx.com/SC/B1/Dlvr/CustDlvr/ExtPrfOfDlvr">
          <POD>
               <Header>
                    <SalesOrderNumber>
                         <xsl:value-of select="$msg/BOM/BO/@SSRPOD/row/U_SalOrdNo" />
                    </SalesOrderNumber>
                    <ArrivalDate>
                         <xsl:value-of select="$msg/BOM/BO/@SSRPOD/row/U_TaxDate" />
                    </ArrivalDate>
                    <Detail>
                         <DOLineQuantity>
                              <xsl:value-of select="$msg/BOM/BO/@SSRPOD/row/U_Quantity" />
                         </DOLineQuantity>
                         <UOM>
                              <xsl:value-of select="$msg/BOM/BO/@SSRPOD/row/U_Unitmsr" />
                         </UOM>
                    </Detail>
               </Header>
          </POD>
     </ns0:MT_POD_B1_System>
</payload>
I have set following things.
Inbound Channel
    scenirio step identifier :z.xxxx
    Inbound Channel(IPO):INB_B1_EVNT_ASYN_EVT
    InboundType:Asynchronous
    Process Trigger:B1Event
    Identification Method: B1Event
    Identification Parameter:n.a
    Identifier:?????
    Identifier Namespace:??????
can anyone help me?
Edited by: Sinha_Sinha on Feb 3, 2012 7:47 AM

Found an authorization object was missing, that enabled the case types to show but hitting the GO button brought a page that can not be viewed in IE. on to the next hurdle..........

Select from (too many) tables

Hi all,
I'm a proud Oracle Apex developer. We have developed an Interactive Report that is generated from many joined tables in a remote system. I've read that to improve performances we can do the following:
1) Create a temporary table on our system that stores the app_user id and the colmun as a result of the query
2) Create a procedure that does:
declare
param1:= :PXX_item
param2:= :PXY_item.
param3:= :V('APP_USER')
insert into <our_table>
(select param3, <query from remore system>)
commit;
3) Rediresct to a query page where IR reads from this temp table
On "Exit" button there's a procedure that purge table data of that user (delete from temp where user=V('app_user'), so the temp table is only filled with necessary data.
Do you see any inconvenience? Application will be used from about 500 users, about 50 concurrent users at a time.
Thank you!

1) We don't have a control on source syste, we can only perform query on itI was referring to a materialized view on the system where Apex is installed, not on the source database.
2) There are many tables involvedI don't understand why this is a problem. Too much data I can see, but too many tables... not so much.
3) Data has to be in real time, with no delayThis would a problem for MV or collections. The collections would store the data as of the initial query. Any IRs using the collection after the fact would be using stale data. If you absolutely have to have the data as of right now every time, then the full query must run on the remote system every time. Tuning that query is the only option to make it faster.
4) There are many transactions on the source tables (they are the core of the source system) and so MV could not be refreshed so fastProbably could be with fast refresh enabled, but not necessarily practical to do so. As I indicated in 3, you have painted yourself into a corner here. You have indicated a need for a real-time query and that eliminates a number of possibilities for query-once use-many performance solutions.

Cannot query tables in remote database

Hi, I have looked around for similar topics but have not found anything that would be close to my problem. I created a public link to a remote database from my portal database, it is a public link and I can query tables in the remote database just fine when I am on the sqlplus prompt. When I try to create a report, or a dynamic page, it lets me go through the wizard steps ok, however when I run it as a portlet or just run it as a report/page it does not seem to be able to see the query. Below is the response I get from running it as a portal. I am logged in as portal30.
ORA-01017: invalid username/password; logon denied
ORA-02063: preceding line from C2K (WWV-11230)
Failed to parse as PORTAL30_PUBLIC - select * from populate@c2k (WWV-08300)
The preference path does not exist:
ORACLE.WEBVIEW.PARAMETERS.1320061995 (WWC-51000)
The preference path does not exist:
ORACLE.WEBVIEW.PARAMETERS.1320061995 (WWC-51000)
Error: Unable to execute query (WWV-10201)
Please help, I have tried everything from public to private synonyms for the linked tables and it just does not work. I am using the most recent version of portal that came with ias 1.0.2.2.0

Actually I solved my problem, it looks like I should have used the db link utility with the portal, I linked the databases on the sqlplus command line and it seems like that was the issue.

Unable To Select From SQL Server table with more than 42 columns

I have set up a link between a Microsoft SQL Server 2003 database and an Oracle 9i database using Heterogeneous Services (HSODBC). It's working well with most of the schema I'm selecting from except for 3 tables. I don't know why. The common denominator between all the tables is that they all have at least 42 columns each, two have 42 columns, one has 56, and the other one, 66. Two of the tables are empty, one has almost 100k records, one has has 170k records. So I don't think the size of the table matters.
Is there a limitation on the number of table columns you can select from through a dblink? Even the following statement errors out:
select 1
from "Table_With_42_Cols"@sqlserver_db
The error message I get is:
ORA-28500: connection from ORACLE to a non-Oracle system returned this message [Generic Connectivity Using ODBC]
ORA-02063: preceding 2 lines from sqlserver_db
Any assistance would be greatly appreciated. Thanks!

Not a very efficient and space friendly design to do name-value pairs like that.
Other methods to consider is splitting those 1500 parameters up into groupings of similar parameters, and then have a table per group.
Another option would be to use "vertical table partitioning" (as oppose to the more standard horizontal partitionining provided by the Oracle partition option) - this can be achieved (kind of) in Oracle using clusters.
Sooner or later this name-value design is going to bite you hard. It has 1500 rows where there should be only 1 row. It is not scalable.. and as you're discovering, it is unnatural to use. I would rather change that table and design sooner than later.

Views - SELECT from VIEW and SELECT from the query inside view definition returning different results

Hi,
I am facing this weird issue. Any help would be appriciated.
I have view with the following definition:
CREATE VIEW [marketing].[OpenedMails]
AS
SELECT
ID_EmailAddress,
ID_Date_Opened,
ID_Contact,
ID_MailSendJobs,
COUNT(ID_OpenedMails) AS OpenCount,
CASE
WHEN ROW_NUMBER() OVER (PARTITION BY CAST(ID_EmailAddress AS VARCHAR(10)) + ' ' + CAST(ID_MailSendJobs AS VARCHAR(10)) ORDER BY ID_Date_Opened) = 1 THEN 1
ELSE 0
END
AS UniqueOpenCount
FROM
dbo.Fact_OpenedMails
where ID_Contact = 382340
GROUP BY ID_EmailAddress, ID_Date_Opened, ID_Contact, ID_MailSendJobs;
order by ID_MailSendJobs
When I run the the select statement in the view definition I get combination of both 1 and 0 for the 'UniqueOpenCount' column.
But when I run the select from the view itself using the following query:
SELECT [ID_EmailAddress]
,[ID_Date_Opened]
,[ID_Contact]
,[ID_MailSendJobs]
,[OpenCount]
,[UniqueOpenCount]
FROM [marketing].[OpenedMails]
I get equal amount of rows but only 0 values for the 'UniqueOpenCount' column which seems to be very weird to me. Why is this happening ? Can anyone help regarding how to solve this ??
Result from the select inside view definition:
Result from the select query directly from the view:
Thanks in advance.
Vivek Kamath

Please post DDL, so that people do not have to guess what the keys, constraints, Declarative Referential Integrity, data types, etc. in your schema are. Learn how to follow ISO-11179 data element naming conventions and formatting rules. You failed. Temporal
data should use ISO-8601 formats – you failed again. Code should be in Standard SQL AS much AS possible and not local dialect.
This is minimal polite behavior on SQL forums.
Things like “ID_Date_Opened” are wrong. The affixes “id” and “date” are called attribute properties in ISO-11179 and data modeling. Since a date is a unit of measurement on a temporal scale, it cannot be an identifier by definition. My guess is this would be
“open_date” if it were done right. And the only display format in ANSI/ISO Standard SQL is ISO-8601 (yyyy-mm-dd)
An email address of -1?? Email addresses are VARCHAR(256), not numeric. There is no reason to cast them AS string!
Your vague “mail_send_jobs” is plural, but columns hold scalars and cannot be plural by definition. The partition cause can hold a list of columns:
WHEN ROW_NUMBER()
OVER (PARTITION BY email_address, mail_send_job
ORDER BY open_date)
= 1
THEN 1 ELSE 0 END
This still makes no sense, but the syntax is better. You do not understand how ROW_NUMBER() works.
Would you like to try again with proper Netiquette?
--CELKO-- Books in Celko Series for Morgan-Kaufmann Publishing: Analytics and OLAP in SQL / Data and Databases: Concepts in Practice Data / Measurements and Standards in SQL SQL for Smarties / SQL Programming Style / SQL Puzzles and Answers / Thinking
in Sets / Trees and Hierarchies in SQL

Select * from {tablename} : invalid table name error

Hi,
I want to get data from a table and the table should be passed at runtime from selecting a table from the drop down list.In case of insertion of values I am getting no errors.But when I pass the table name as an argument I am getting invalid table name error.I think there is any syntax errors.I appreciate any help.
Regards,
Sivaram

you cannot use parameter for table name in PreparedStatement.
you can either generate the sql dynamically, such as String sql="select * from "+tablename, or you can check whether the database vendor has special api for this.

Select from local (tmp) Table in Function - Table not found

Hi,
I want to create a cursor which selects from a Table which does not exist in database.
I create this table as local table (how is it called? nested table?).
Not shown in the code but I want to fill this local table later.
After filled my cursor is going to use this filled table.
When try to run I get the error Table or View does not exist at the "FROM TempTab_var T1;" of my cursor.
This is my simplified code:
CREATE OR REPLACE FUNCTION PC_RL_MTA_PMT
RETURN PC_RL_MTA_TYPE_PMT
IS
result_out PC_RL_MTA_TYPE_PMT;
TYPE TempTab_record_type IS RECORD
    (ID int);
TYPE TempTab_type IS TABLE OF TempTab_record_type
          INDEX BY BINARY_INTEGER;
TempTab_var TempTab_type;
CURSOR TempCursor3_var IS
    SELECT    ID AS ID_var
    FROM    TempTab_var T1;
BEGIN
RETURN result_out;
END PC_RL_MTA_PMT;
Any Ideas whats wrong?
Thanks very much in advance.

And a further example from my library of examples, just to help you out...
SQL> CREATE OR REPLACE TYPE num_descript AS OBJECT(num number, descript varchar2(30))
2 /
Type created.
SQL> CREATE OR REPLACE TYPE tbl_num_descript AS TABLE OF num_descript
2 /
Type created.
SQL> CREATE OR REPLACE PACKAGE reftest AS
2    FUNCTION pipedata(p_choice number) RETURN tbl_num_descript PIPELINED;
3 END;
4 /
Package created.
SQL> CREATE OR REPLACE PACKAGE BODY reftest AS
2    FUNCTION pipedata(p_choice number) RETURN tbl_num_descript PIPELINED IS
3      v_obj num_descript := num_descript(NULL,NULL);
4      v_rc sys_refcursor;
5    BEGIN
6      IF p_choice = 1 THEN
7        OPEN v_rc FOR SELECT empno as num, ename as descript FROM emp;
8      ELSIF p_choice = 2 THEN
9        OPEN v_rc FOR SELECT deptno as num, dname as descript FROM dept;
10      END IF;
11      LOOP
12        FETCH v_rc INTO v_obj.num, v_obj.descript;
13        EXIT WHEN v_rc%NOTFOUND;
14        PIPE ROW(v_obj);
15      END LOOP;
16      CLOSE v_rc;
17      RETURN;
18    END;
19 END;
20 /
Package body created.
SQL> select * from table(reftest.pipedata(1));
       NUM DESCRIPT
      7369 SMITH
      7499 ALLEN
      7521 WARD
      7566 JONES
      7654 MARTIN
      7698 BLAKE
      7782 CLARK
      7788 SCOTT
      7839 KING
      7844 TURNER
      7876 ADAMS
      7900 JAMES
      7902 FORD
      7934 MILLER
14 rows selected.
SQL> select * from table(reftest.pipedata(2));
       NUM DESCRIPT
        10 ACCOUNTING
        20 RESEARCH
        30 SALES
        40 OPERATIONS

Parition issue when selecting from the main table

I have a partitioned table where i jsut did a partition
exchange with another temp table.
when I query the partition it looks good, i.e. the data is there, but when I query the data directly
on the table no rows are returned.
for example
select count(*)
from sales partition (2007)
12455
select count(*)
from sales
where year = 2007
0 rows
I've reviewed the parition 2007 and esnured the 'where year = ' clause is accurate via previous years.
why am i not seeing this data in the second query?
db = 10G R2
thanks

create table SALES
nologging
parallel
partition by range (year,fscl_period,channel)
PARTITION p_200701_5 values less than (2008,200702,6) TABLESPACE SALES_2007_DATA,
PARTITION p_200701_6 values less than (2008,200702,7) TABLESPACE SALES_2007_DATA,
PARTITION p_200701_7 values less than (2008,200702,8) TABLESPACE SALES_2007_DATA,
PARTITION p_200701_8 values less than (2008,200702,9) TABLESPACE SALES_2007_DATA,
PARTITION p_200701_9 values less than (2008,200702,10) TABLESPACE SALES_2007_DATA,
PARTITION p_200701_10 values less than (2008,200702,11) TABLESPACE SALES_2007_DATA,
PARTITION p_200701_11 values less than (2008,200702,12) TABLESPACE SALES_2007_DATA,
PARTITION p_200701_12 values less than (2008,200702,13) TABLESPACE SALES_2007_DATA,
PARTITION p_200701_13 values less than (2008,200702,14) TABLESPACE SALES_2007_DATA,
PARTITION p_200702_5 values less than (2008,200703,6) TABLESPACE SALES_2007_DATA,
as select * from table...
note: year,fscl_period,channel are all NUMBER datatype.
Fiscal period is month bascially
I am wondering if doing this all this in a range partition, and not a range/list which channel may be better qualified for data wise, is the issue. Or perhaps range by year, sub by month, then list by channel. What will the impact be either way?
Interestingly, the data will come back on a star query i.e. when the SALES table is joined to the calendar_dim (via a day_id field) and use the 2007 predicate from the calendar_dim rather than the one on SALES (the one used for the part. definition).
Also, i did the partition exchange originally with the novalidation option. We tried again without that and the exchange failed saying some data doesn't qualify. But reviewing the data it appears it all should.
We then just did a giant insert statement and it all went through, but i have not had teh chance to validate what partitions the data live in now.
thanks for any help.
jeff
Message was edited by:
jeffs

Selecting from Materialized Query Tables (DB2 UDB database)

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