Updating Dimensions And Cube Data
Feb 21, 2007
I need to create a package that updates the dimensions and cube data from a data warehouse on daily basis. I was going to create a Data Flow that takes the data from the DW source then put it as input to a Process Dimension destination to update the dimensions and use a Process Partition destination in the same manner to update the cube, but then I came across the Analysis Services Processing Task which seems to do the job as well. I am kinda confused which way to go. Any recommendations?
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Sep 22, 2015
I have a cube with 2 many-to-many dimensions where a special mdx query needs about 5 seconds. When I resolve the many to many relationships by multiplying the data in the fact table the query needs 21 seconds.
In general do many-to-many dimensions slow down query performance of a cube?
Without the many-to-many dimensions of course the fact table has much more rows. Could this be the reason for the performance loss?
how to tweak query performance of a cube in general?
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Oct 19, 2007
We have set up an IS package to process an AS 2005 database (comprising cube & dimensions, etc) daily, via a SQL Server Agent job on both development and production systems. This has been working fine for months.
A new dimension was added to the cube on the development system - automatic processing via the IS package continued without issue. However, when the new dimension was added to the production system the IS package no longer processes the cube correctly. Although all appears ok (and all is present and correct in the logs), no data updates to the cube are made. Only when the cube is manually processed does the cube get updated.
Anyone got any ideas about how to get around this issue? We have created a new IS package, with a single Analysis Services Processing Task, and tried this but get the same outcome.
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Feb 28, 2008
Hi, all experts here,
Do we always have to use SCD component for the loading of data into data warehouse to handle changes of rows?
I am looking forward to hearing from you and thank you very much in advance for your help.
With best regards,
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Jun 21, 2005
I have an archive of an Analysis Services database that was created on a server that is not accessible to me. I also have a copy of the source SQL Server database that it uses as a data source. I have restored both of these to my server. I have figured out how to change the data source to point to my server for the fact tables referenced, but I can't figure out how change the data source for the shared dimensions. I would like to be able to do work on this version of the database, but I get errors when I try to browse the dimension data because it can't connect to the original data source. Any ideas?
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Jul 10, 2007
Hello Everybody,
Can anybody please let me know the procedure for loading data into Dimensions & Facts? And what is the sequence of loading?
Thanks in Advance
Rajesh
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Jul 5, 2015
I have one dimension and one measure group. I deployed and processed the cube. Now I am able to browse the data. Now I added one more dimension. I deployed and reprocessed again the Cube. Now I am not able to see any values. Â I am getting like below.
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Apr 20, 2015
Should we have foreign key relationship between two slowly changing dimensions?
Most of the cases we talked about are about how to build an SLC, any example of trying to have two SLCs with FK relationship in a snow flake schema?
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Sep 21, 2006
I am very new to SQL Server 2005. I have created a package to load data from a flat delimited file to a database table. The initial load has worked. However, in the future, I will have flat files used to update the table. Some of the records will need to be inserted and some will need to update existing rows. I am trying to do this from SSIS. However, I am very lost as to how to do this.
Any suggestions?
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Aug 16, 2007
Hi,
I use lookups to map surrogate of level 1 dimensions to my fact tables in SSIS.
But how to handle a level 2 dimension with a ValidFrom and a ValidUntil date field?
I do not use an IsCurrent column, because this could problem with late arriving facts.
- In dts I used an SQL statement like this:
update SA
SET SA.DimProdRef = Dim.RecordID
FROM SAWarenEingang SA, DimProd Dim
where SA.ProduktNumber = Dim.ProduktNumber
and SA.ArtikelkontoBewegungsdatum between Dim.ValidFrom and Dim.ValidUntil
Now in SSIS I want to handle the whole thing in the data flow without using a staging table:
- Using Lookups: I would have to pass the date column for each inside the fact table into the lookup. That does not work.
- Using Execute SQL in the data flow: would be very slow, because the statement will be executed for any line in the dataflow
Any ideas?
Best regards,
Stefoon
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May 9, 2006
I've got a report that is using a cube as a data source and I can't get the report to show all the data. Only data at the lowest level of the cube is displayed. The problem is that most of the data I'm concerned with is at higher levels. There's no problem with the MDX. I get the correct results when I run the query.
I'm using a table to show the results. I've also tried a matrix, but I get the same results. I'm using SSRS 2005 and SSAS 2000.
Anyone have experience with this? Am I missing something simple?
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Aug 23, 2015
I am just starting out using CUBEMEMBER/CUBEVALUE formulas in excel linked into a sql olap db - using this method for some custom reports where pivot tables are not suitable.
The time dimension values include Months, Quarters and Years and the CUBEMEMBER formulas like
=CUBEMEMBER("OLAPCUBE","[Time].[Time].[Year].&[2015].&[1].&[1]") work fine - 1st quarter 1st month etc.
Is there a straightforward notation to aggregate months or do I need to use a plus sign to add a number of CUBEMEMBER formulas together.In other words - Is there an easier way of for say jan to july 2015 totals than
=CUBEMEMBER("OLAPCUBE","[Time].[Time].[Year].&[2015].&[1]") + (CUBEMEMBER("OLAPCUBE","[Time].[Time].[Year].&[2015].&[2]")) + (CUBEMEMBER("OLAPCUBE","[Time].[Time].[Year].&[2015].&[3].&[7]"))
I haven't tested this but have assumed it works but a bit long and clumsy.
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May 19, 2015
I have problems creating a cube with AMO.
I can add the cube to the database object and fill it with dimensions and a measuregroup (see code below).
If I call cube.Update() it says something like "Error in meta data manager. Cube has no measuregroups." (getting the message in german language)
The error in Microsoft.AnalysisServices.OperationException.Results.Messages is -1055653629
I can't find any documentation about this (or any other) error code in Microsoft documentation.
Here's my Code:
Cube newCube = database.Cubes.Add("MyCube","MyCube");
newCube.Language = 1031;
newCube.Collation = "Latin1_General_CI_AS";
CubeDimension dim = newCube.Dimensions.Add("dim1","dim1","dim1");
CubeAttribute attrib = dim.Attributes.Find("dim1Attr1");
[code]....
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Aug 9, 2004
Hi,
I have made sure that I am a member of OLSP Adminstrator group on the server and everything seems to work al the way till design storgae and cube processing but then when I browse the cube, I do not get any data :confused:
Can someone kindly help and guide please.
Many thanks.
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Feb 29, 2008
Can someone help me out in telling me what a data cube is and if you have any examples I can look at?
We are in the process of using data cubes through SQL. What we are looking for is to be able to have summary of data, but if we wanted to click on a grouping we can go to the details of the data.
I just wanted to know if there was any infomation/websites I can go and look at.
Thanks,
Wendy
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Dec 28, 2006
Hi
i am using pivot table 11 to display the data from SSAS Cube. the problem is
1- pivot table fetches all the data and display it according to the design. but what i need is
a- the user could only see the data which was posted by himself.
b. He must be unaware of the data posted by other users.
in database table there is a field named userId which is also which is part of dimenssion in myCube.
i dont want to use filteraxes for this purpose actually i want the user to be unaware of other users of system also
any single helping word will be appriciated
Regards
Salman Bashir
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May 27, 2008
When I make a call to GetSchemaDataset with a restriction of a cube name with a space in the name of the cube the call fails. Following is a sample of the code: adoRestriction = new AdomdRestriction("CATALOG_NAME", "Contoso Telecom_Contoso"); adoRestrictions.Add(adoRestriction); dataSet = conn.GetSchemaDataSet("MDSCHEMA_CUBES", adoRestrictions); I am running SQL Server 2005 Analysis Services SP2. Is there some way to qualify the cube name in the restriction or is this just a bug? Thanks.
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Feb 26, 2003
Is there any way to use a web based thin client to access OLAP without installing analysis services on the web server?
Thanks for your help!
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May 31, 2005
Is any way to export and import an olap cube whithout his data?
Tks!
Paul
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Dec 12, 2005
Hi friends,
I am new to MSAS world. I need help related to this. I want to pull data from MSAS cube programmatically. Only way I know is thru ODBO, but that won't help me in this case, cause I might have to drill down upto all possible intersections stored in MSAS (at least all of the stored members). Doing this thru MDX could be humongous thing, at least manipulating data taken out using ODBO.
I might be missing something out here. Can anybody help. It would also help if somebody can tell me if any other approach is poosible.
Thank you.
Abhijeet
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Sep 3, 2007
I've seen posts about merging 2 databases but everyone is talking about 2 SQL based databases. I have a data cube based on MDX query giving me all the Sales data. I have a Excel sheet with the Budgets in it, thanks to the connector i can browse through my Excel file using SQL statements.
Now the problem that i have is i want to merge these 2 data's into one report i want to provide Sales figures from the cube with the budgets next to them which are stored in the Excel file.
So basicly is it possible to merge an MDX based database with an SQL database ? Cuz all the solutions i have found to far is by joining databases which is always done on SQL level.
Is this possible or just impossible ?
Thanks in advance
Joa
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Feb 14, 2008
Hello,
I want to make a package in SSIS for automatic process of my data cube providing some log informations (two INSERT statements to my log table with actual date and result of operation succesful/unsuccesful). I tried to set data source to analysis services, I found my cube but I don't where I can add my cube to project and how can I desingn it. Can anybody tell me how to??? Thanks
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Jun 28, 2007
Hello,
I have a problem with date conversion when the date is coming from a cube.
I mean the function "=cdate(Fields!Signature_Date.Value)" works fine when the date is always fill in, but when my record is equal to nothing, I have got the value "#error" in my report...
Which is the best way to avoid to display this value in my report?
I have used the code "=iif(Fields!Signature_Date.Value = nothing, nothing, cdate(Fields!Signature_Date.Value))" but it doesn't work neither...
Please, if my only way to resolve that is to convert the field in the MDX statement, could you give me a code example...?
Thanks,
Guillaume
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Mar 1, 2007
Dear Friends..
I need help if any one can... My need is that...I am devloping my Cube using SSAS. I want to access my cube in multi languages e.g.: English, Japanese or other. At the movement I have two languages description in SQL Database like English and Japanese.
But In SSAS Translations, I can translate Measures Groups, Dimensions, Perspectives, KPIs, Actions, Named Sets & Calculated Members names. But there will be a need to Map Columns as per selected Lenguage so that I can display in proper language data.
Suppose I select Japanese the description should come from Column where Japanese description is stored.
OR any othere method by doing I can see my reports/data in any language.
Please Help...
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Nov 21, 2006
I'm defining a mining structure against an OLAP dimension. The continuous value that I'm using both as input and for forecasting represents the time to complete a certain process.
There's something that strikes me as if it could be a problem, but I'm not sure. Our fact table has multiple columns (with multiple correponding measures in the cube). The "time-to-complete" measure is only populated on some of the fact rows - the rows that represent completion information. Other rows represent other information, and the "time-to-complete" value is set to 0. This works fine for cumulative time-to-complete and average time-to-complete, but it seems like it could mess up data mining. Will those 0-value facts skew the mining results? I'm not seeing a way to filter out those entries and only include the non-zero facts in the mining processing.
Or perhaps I'm totally misunderstanding something, which is quite possible. :)
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Nov 19, 2006
Hi,
I've created a Cluster data mining model and seems to correctly return data. However I've created a data mining dimension and cube but when I go to query the cube it doesn't return any data if I select any members on the data mining dimension. Any suggestions to where I can look to resolve this?
Thanks
Sanjay
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May 22, 2008
Hello,
I want to query data from a cube in analysis services with parameters in reporting services. I'm not sure how to make my select statement. Can someone help me please
Pat
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Mar 22, 2004
Client issues query which sends out individual requests to the 2 OLAP servers that are load balanced. The client evaluates the versions of the returned record sets to ensure the consist data being returned for one single query. Otherwise, this error will be seen:
The cube has been updated by the server the data is now obsolete.
These servers sit behind a cisco 11506 CSS with load balancing based on balance type: least busy server, also persistence based on cookies.
My developer says this worked fine for a long time then just 'started happening'.
any suggestions are appreciated.
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Apr 3, 2008
I have a table based around requisitions, and each requisition has a number of positions. That number can change over time through updates to pertinent rows rather than through transaction-like records that record an entire history, and I'm only able to get a monthly snapshot of the table. What I decided to do is still use one table for OLAP (fact_requisitions) but add a column called period_key that refers to the month the data comes from. So if I have two months of data then the table has each requisition twice, possibly with differing position counts, and new requisitions from the second month are only present once. Then I tried to filter the MDX query like so:
SELECT {
([Dim TimeRequestClosed].[Year - MonthNumber].[Year_Text].&[2008].&[1],[Dim Requisitions].[Period].[Period Key].&[200801])
}
ON COLUMNS,
NON EMPTY
{
([Dim Location].[Region Name].MEMBERS, [Dim Location].[Period Key].&[200801])
}
ON ROWS
FROM
[Requisitions]
WHERE
[Measures].[Request Closed Date Count]
This query doesn't work even though the data is there, it just returns nulls. Am I going about this all wrong? If not, what might I be doing wrong, and how would I get the query to return more than one period (e.g. tell Dim Requisition to match up with Dim Location on the period key)?
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Aug 7, 2015
I want to implement population data in sales cube.
Fact table has customer code which is foreign key of Customer master dimension which in turn is linked to census data dimension. Census data dimension have city wise population data having foreign keys of zone and state.
We want to add population data in fact table.
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Apr 3, 2007
Whether can cube be the data source of TimeSeries algorithm?
If it is ture,how can id do?
Thanksï¼?ï¼?ï¼?
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Dec 25, 2006
Hi Guys,
We had existing cubes in our Analysis Server, we were required to move them on another Reporting Server which would be using Data Replicated every night to that server. Problem is now source data is divided into 2 Reporting Database Servers. Table Names/View Names are the same in all the Databases. I just want to change the data source pointing to existing Database to the new Reporting Server. Can you tell me how this can be achieved?
Regards,
Kaushal
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Nov 21, 2006
We have a set of cubes and dimensions, and we're experimenting with data mining against the cubes (primarily for forecasting applications). We have a custom time dimension (which we call calendar), not generated by the BIStudio wizard. The dimension has year/month/day/hour/... attributes. But when I try to add this Calendar dimension to the mining structure as a nested table using BI studio, it only shows the Year attribute, not the others. Other dimensions seem to show all the attributes.
Is there something we've done wrong in defining our time dimension? What determines which attributes show up as available for selection in BI studio?
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