How to design a snapshot Table / Report in OBIEE
Hello All,
I am currently developing a report in which I need to compare the Cost at diff times.
Year view should compare current cost with year ago cost for the same item, similarly Month view shoud compare current cost with month ago cost.
Any help to design this report is highly appreciated.
Thanks.
Hi,
I have created two measures for Yago cost and Mago cost.
But When I run a request using any of these measures I am getting the below error.
Error Codes: OPR4ONWY:U9IM8TAC:OI2DL65P
State: HY000. Code: 10058. [NQODBC] [SQL_STATE: HY000] [nQSError: 10058] A general error has occurred. [nQSError: 22047]
The Dimension used in AGO function must be referenced in the query. (HY000)
I tried to run the request including the dimensions used in AGO.
As suggested in the Metalink, I have added "<ReportAggregateEnabled>true</ReportAggregateEnabled>" to instance config and refreshed PS.
Still I am getting the same error. Can you please guide to resolve this issue.
Srikanth,
I haven't tried your solution yet.
Thanks.
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Edited by: CRGuru on Jun 17, 2009 3:41 AM
Edited by: CRGuru on Jun 17, 2009 3:43 AM
Edited by: CRGuru on Jun 17, 2009 3:43 AMPlease re-post if this is still an issue or purchase a case and have a dedicated support engineer work with you directly
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[Schema Design]: How to reduce inventory snapshot table size
We are planning to store inventory level's periodic snapshot at the end of each day. We have close to 50k different products.
But on a given day only 5-6k products inventory changes.
As I understand if I start inserting just the products which have changed inventory, analysis around semi-additive dimension (Quantity) doesn't work properly.
For better understanding, lets take say the fact table looks like:
product_id time_id quantity
1 1 100
2 1 130
3 1 100
1 30 200
So basically, it says product 1,2,3 from time_id 1 to time_id 29 doesn't have any update in quantity. But product_id 1's inventory changes to 200 on time_id 30.
This approach reduces fact table size by approx 90 rows.
My question is, is it a good idea? Would this semi-additive dimension still give the same result (I doubt though)?
If not, then what other approaches I can take?
Thanks in advance.Another option is to capture just the net changes (sometimes referred to as a journalized fact table). Then you can create a calculated measure that sums all the changes from the beginning of time up to the current time-slice.
This may seem like an inefficient solution, but there are ways to reduce the problem by limiting the history for which inventory snapshots are available. For example, if the business only needs snapshots for the past 90 days, then you can grab a snapshot
of inventory for all products on day 0, and then capture the net changes for each product for days 1-90. Then you can calculate the snapshot in time by adding the baseline snapshot to the sum of all net changes.
BI Developer and lover of data (Blog |
Twitter) -
How to design a fact table to keep track of active dimensions?
I would like to design a classic OLAP facts table using a star scheme. The SQL model of the facts table should be independent of any concrete RDBMS technology and portable between different systems.
The problem is this: users should be able to select subsets of the facts based on conjunctive queries on the dimension values defined for the facts. However, the program that provides the interface for doing this to the user should only present those dimensions where anything is still selectable at all. For example, if a user selected year 2001 and for dimension contract code there is only a single value for all records in the fact table for that year, this dimension should not be shown to the user any more. This should be solved in a generic way. So for n dimensions in total, if the current set of facts is based on constraints from j dimensions, I want to know for which of the remaining n-j dimensions there is still something to select from and only show those.
The obvious way is to make a count(*) query on the distinct foreign keys of each of the dimensions on the fact table, using the same where clause. That means that one would need (n-j) such queries on the whole facts table and that sounds like an awful waste of resources given that the original query for selecting the facts could have done it internally "on the fly".
How can this be achieved in the most performant way? Is there a "classical" way of how to approach this problem? Is there tool support for doing this efficiently?
Any help or pointers to where one could find out more about this would be greatly apreciated - thank you!>
Did you get the counts for each value of each dimension by doing a separate query with the current "WHERE" clause on each dimension?
>
My method doesn't apply to your use case. I wrote a Java class to create my own bit-mapped indexes on CSV files. So each attribute value was a one million bit binary raw.
I don't know, and don't want to know, what your particular requirements are. But I can show you a basic process that will work for large numbers of rows. Get a simple process working and then explore to see if it will meet your particular needs. Not going to answer questions here about anything but about my example code
1. Assume a single fact table with one primary key column and multiple single-value attribute columns.
2. The table is not subject to DML operations AT ALL - truncate and load if you want apply changes. Meaning it will be useful for research purposes on archived data.
3. The purpose of the table is to select the fact table ROWIDs for records of interest. So the only value selected is a result set of ROWIDs that can then be used to get any of the normal FACt table data and other linked data as needed.
Create the table - insert some records, create a bitmap index on each dimension column and collect the statistics
ALTER TABLE SCOTT.STAR_FACT
DROP PRIMARY KEY CASCADE;
DROP TABLE SCOTT.STAR_FACT CASCADE CONSTRAINTS;
create table star_fact (
fact_key varchar2(30) DEFAULT 'N/A' not null,
age varchar2(30) DEFAULT 'N/A' not null,
beer varchar2(30) DEFAULT 'N/A' not null,
marital_status varchar2(30) DEFAULT 'N/A' not null,
softdrink varchar2(30) DEFAULT 'N/A' not null,
state varchar2(30) DEFAULT 'N/A' not null,
summer_sport varchar2(30) DEFAULT 'N/A' not null,
constraint star_fact_pk PRIMARY KEY (fact_key)
INSERT INTO STAR_FACT (FACT_KEY) SELECT ROWNUM FROM ALL_OBJECTS;
create bitmap index age_bitmap on star_fact (age);
create bitmap index beer_bitmap on star_fact (beer);
create bitmap index marital_status_bitmap on star_fact (marital_status);
create bitmap index softdrink_bitmap on star_fact (softdrink);
create bitmap index state_bitmap on star_fact (state);
create bitmap index summer_sport_bitmap on star_fact (summer_sport);
exec DBMS_STATS.GATHER_TABLE_STATS('SCOTT', 'STAR_FACT', NULL, CASCADE => TRUE);Now if you run the 'complex' query for the example from my first reply you will get
SQL> set serveroutput on
SQL> set autotrace on explain
SQL> select rowid from star_fact where
2 (state = 'CA') or (state = 'CO')
3 and (age = 'young') and (marital_status = 'divorced')
4 and (((summer_sport = 'baseball') and (softdrink = 'pepsi'))
5 or ((summer_sport = 'golf') and (beer = 'coors')));
no rows selected
Execution Plan
Plan hash value: 1934160231
| Id | Operation | Name | Rows | Bytes |
| 0 | SELECT STATEMENT | | 1 | 30 |
| 1 | BITMAP CONVERSION TO ROWIDS | | 1 | 30 |
| 2 | BITMAP OR | | | |
|* 3 | BITMAP INDEX SINGLE VALUE | STATE_BITMAP | | |
| 4 | BITMAP AND | | | |
|* 5 | BITMAP INDEX SINGLE VALUE | AGE_BITMAP | | |
|* 6 | BITMAP INDEX SINGLE VALUE | MARITAL_STATUS_BITMAP | | |
|* 7 | BITMAP INDEX SINGLE VALUE | STATE_BITMAP | | |
| 8 | BITMAP OR | | | |
| 9 | BITMAP AND | | | |
|* 10 | BITMAP INDEX SINGLE VALUE| SOFTDRINK_BITMAP | | |
|* 11 | BITMAP INDEX SINGLE VALUE| SUMMER_SPORT_BITMAP | | |
| 12 | BITMAP AND | | | |
|* 13 | BITMAP INDEX SINGLE VALUE| BEER_BITMAP | | |
|* 14 | BITMAP INDEX SINGLE VALUE| SUMMER_SPORT_BITMAP | | |
Predicate Information (identified by operation id):
3 - access("STATE"='CA')
5 - access("AGE"='young')
6 - access("MARITAL_STATUS"='divorced')
7 - access("STATE"='CO')
10 - access("SOFTDRINK"='pepsi')
11 - access("SUMMER_SPORT"='baseball')
13 - access("BEER"='coors')
14 - access("SUMMER_SPORT"='golf')
SQL>As you can see Oracle is combining bitmap indexes on columns in a single table to implement the same AND/OR complex conditions I showed earlier. It doesn't need any other table to do this.
In 11g you can create virtual columns and then index them.
so if you find that the condition 'young' and 'divorced' is used frequently you could create a VIRTUAL 'young_divorced' column and create an index.
alter table star_fact add (young_divorced AS (case
when (age = 'young' and marital_status = 'divorced') then 'TRUE' else 'N/A' end) VIRTUAL);
create bitmap index young_divorced_ndx on star_fact (young_divorced);
exec DBMS_STATS.GATHER_TABLE_STATS('SCOTT', 'STAR_FACT', NULL, CASCADE => TRUE);Now you can query using the name of the virtual column
SQL> select rowid from star_fact where young_divorced = 'TRUE'
2 and (state = 'CA') or (state = 'CO')
3 /
no rows selected
Execution Plan
Plan hash value: 2656088680
| Id | Operation | Name | Rows | Bytes | Cost
| 0 | SELECT STATEMENT | | 1 | 28 |
| 1 | BITMAP CONVERSION TO ROWIDS | | | |
| 2 | BITMAP OR | | | |
|* 3 | BITMAP INDEX SINGLE VALUE | STATE_BITMAP | | |
| 4 | BITMAP AND | | | |
|* 5 | BITMAP INDEX SINGLE VALUE| STATE_BITMAP | | |
|* 6 | BITMAP INDEX SINGLE VALUE| YOUNG_DIVORCED_NDX | | |
Predicate Information (identified by operation id):
3 - access("STATE"='CO')
5 - access("STATE"='CA')
6 - access("YOUNG_DIVORCED"='TRUE')
SQL>
----------------------------------------------------------------Notice that at line #6 the new index was used. The VIRTUAL column itselfl doesn't create data for the fact table; the definition only exists in the data dictionary.
The YOUNG_DIVORCE_NDX is real and does consume space. The tradeoff is additional space for the index but you make the query easier because you don't have to recreate the complex condition every time.
Oracle can work with the complex condition and combine the indexes so this really only helps the query writer. Your UI should be able to hide the query construction from the user so I would avoid the use of VIRTUAL columns and an additional index until you demonstrate you really need it.
If you provide users with their own RESULT table to store custom query results you could just store the query name and the set of primary keys from the result set. I used ROWIDs in the example but don't use rowid for a real application - use a primary key value that won't change.
So your UI would let users construct complext dimension queries for 'young_sportsters' and get a result set of primary keys for that. They could save the label 'young_sportsters' and the primary keys in their own work table. Then you can let them run queries that use the primary keys to query data from your active data warehouse to get any other data it contains.
>
Did you get the counts for each value of each dimension by doing a separate query with the current "WHERE" clause on each dimension?
>
For an Oracle implementation you need to do a count select for each dimension. I haven't tried it but you might be able to do multiple dimensions in a singe query. One query would look like this>
-- get the dimension counts
SQL> select beer, count(*) from star_fact group by beer;
BEER COUNT(*)
N/A 56977
Execution Plan
Plan hash value: 1692670403
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Ti
| 0 | SELECT STATEMENT | | 1 | 12 | 3 (0)| 00
| 1 | SORT GROUP BY NOSORT | | 1 | 12 | 3 (0)| 00
| 2 | BITMAP CONVERSION COUNT| | 56977 | 667K| 3 (0)| 00
| 3 | BITMAP INDEX FULL SCAN| BEER_BITMAP | | | |
SQL>Notice that Oracle uses only the index to gather the data. -
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i've been working with DB links much before, but this was since long time ago before i join the Business Intelligence field
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and from your user in DB1 you can access tables and view from DB2
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and you dont see the tables of the link in the Universe
but you can try to create a drived table selecting from any tables from DB2
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select id,name from user.table2@mylink
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I may like to make UI to display value as in the attached figure1.
5 factors can fix and point to one test point, such as region, station, panel, phase, level, from big to small scale one by one.
Normally, user only care about station. But the problem is some time the other columns, such as region, panel phase and level, also need to be displayed.
Is it somehow possible to group the same scale using the tree display as figure 2. Or need to display all of them as figure 3.(Sometimes only 1 of the 5 factor needs to take care and displayed)
If can use the tree diagram, how to re-fille the values whe tree zoom in & out.
Another thing is every test point has many data in different timestamp. How to display them as in figure 4. Using another tree to zoom in & out?
Another need to take in mind is finally, some cell need to change color and some grid need cut paste into office.
Thanks so much for your help.
Attachments:
demo.JPG 77 KBHi VENKATESH.J,
Thanks for your inquiry, now I am just design for it.
And found there are more than I can to put into a table, since there are 3 kinds of info, not only 2 kinds just for columns and rows. They are stations and related names, values and timestamps.
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Hi All,
I am creating a report with table and graph placing side-by-side. My graph size is big and table displaying only top 10 values. How can i increase the size of table to make it almost similar in size to graph. I tried various options like editing table and setting custom width and height, but did not work ??Hi,
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I am new to ADF Tech,
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Ex:
<TABLE width="100%" border="1">
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<TD>GUID</TD>
<TD>123</TD>
<TD>Name</TD>
<TD>Mark Antony</TD>
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<TD>Created</TD>
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<TD>Modified</TD>
<TD>Oracle User</TD>
<TD>Placements</TD>
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</TABLE>
Thanks in AdvanceBalaji,
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Hi All,
I have a query regarding 'How to' to build an analysis report in OBIEE 11g.
The data model is a financial data model, where information such as Actual, Plan, Forecast, What - if etc for current AND prior year need to be displayed in a dashboard.
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I am able to show the current vs prior year data in the same dashboard for Actual or Plan or forecast or what if (depending on data availability in the database).
I want to achieve the same information in a single analysis report instead of two separate analysis reports. I do not want to create separate physical report for current and prior year data.
I need one analysis report which I can use in dashboard and depending on selection for scenario (actual , plan, forecast or wht if) I want to show the current AND prior year data the way I achieved in with two seperate reports embedded in their respective sections as explained above.
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SantoshAs per I understand your requirement,
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Now in your analysis, select the year column along with all the measures you want (Actual, plan, Forecast, and what-if, etc).
Create a filter on Year column and convert it into SQL. Put the condition as:
"Year" BETWEEN @{Presentaion_Variable} - 1 AND @{Presentation_Variable}
You will get the result for selected year and the previous year.
Hope it helps..
Regards,
A.K. -
How to Design Multi Page Report in SSRS 2008
Hi All,
I have managed to create a multi page report. When I am preview mode i can see that the report has 2 pages.
But when I am in design view I cannot view the second page. How can I view the second page. Reason being I am trying to create a template where the table for certain data needs to be at the top of the page and some data at the middle and so on.
Thanks in advance.
Aash.
AashHi Aash2,
According to your description, the behavior of cannot view the second page in design view is expected, in another way, there is only one page in design view.
Report Designer supports two views: Design to define the report data and report layout, and
Preview to display a rendered view of the report. If you would like to show a table on the first page, and show the other table on the second page, you can add a page break on the first table like followings:
1. Click the gray handle in the first table, select “Tablix Properties”
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For more details about report designer, please see the following article,
Working with Report Designer in Business Intelligence Development Studio:
http://msdn.microsoft.com/en-us/library/cc281300(v=sql.110).aspx
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How to create a clickable Table of contents using Crystal Reports 8.5. I was able to create the table of contents using subreport and temporary table. but not able to link to the pages.
how to make it clickable ?
-VivekHi Vivek,
To you may create on demand sub report.
In main report only the link will be shown when you click on the link the sub report will be opened in a new tab.
It can be placed in a Group header and to show the data for that particular group only.
Click on the Help menu in the crystal Reports Designer and open the Crystal Reports Help
Go to Index tab and type in subreport
Select Creating On demand you will get lot of information on that.
Please let us know if that is enough to solve your problem
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Exemple:
Table1
Cliente name:
John
Client number:
12345
Survay number of negative answers:
3
Table2
Questions and answers that were negative:
Question: How much time where you waiting
Avaluation: 3 (from 1 to 10)
Answer: They only called me 1 mouth later
Can you please help me?Hi,
Based on the description, I understand that you want to add subreport in the main report. When previewing the main report, the subreport can be shown in detail. Please see the screenshots on my test:
In Reporting Services, we can create parameters and pass them from main report to subreport in order to control the data dynamically.
References:
Subreports (Report Builder and SSRS)
Add a Subreport and Parameters (Report Builder and SSRS)
If I have any misunderstanding, please feel free to contact me.
Regards,
Heidi Duan
Heidi Duan
TechNet Community Support -
How to create an internal table in a Report from File of FTP Server.
Hi All,
I want to create an internal table in a Report program. But the problem is I have to download two latest files from FTP server.
Now, based in those file I have to design internal tables in current program. The problem is the program from which these files are being generated has options to display some fields in the output. Hence, the columns of these files becomes dynamic due to which I am not able to design the internal table in my current program...Please Help.
Regards & Thanks.
Prashant.Hi,
Or you can use the RTTS classes...
Plenty of examples over here.
one external link: http://help-abap.zevolving.com/2008/09/dynamic-internal-table-creation/
Kr,
Manu. -
How to create a snapshot report on the specific destination?
dear all
How to create a snapshot report on the specific destination?
thanks
johnuser8779435 wrote:
dear all
How to create a snapshot report on the specific destination?
thanks
john
Hi,
when prompted just input the full path with filename for example
Enter value for report_name: /tmp/awrreport.htmlHope this helps
Cheers
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