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Duplicate Attribute Key Found While Processing

Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join duplicate attribute key has been found them; it only takes a minute: Sign up “Duplicate attribute key” error when attribute is not a key up vote 20 down vote favorite 9 I am getting the following error when processing a Dimension: Errors in the OLAP ssas duplicate attribute key hierarchy storage engine: A duplicate attribute key has been found when processing: Table: 'dbo_Orders', Column: 'Project', Value: 'client service stuff'. The attribute is 'Project'. 'Project' is an attribute of the 'Orders' dimension, but not a key. Nowhere did I indicate that the Project column is a key! I should be able to have as many duplicates as necessary, just like a first name field. I'm new at Analysis Services project and really need to get past the fact that SSAS

Ssas A Duplicate Attribute Key Has Been Found When Processing Table

is constantly complaining about duplicate values when it should be perfectly OK to have duplicate values. I'm sure this must be something simple that I'm overlooking. Edit: I realize that it is possible to set KeyDuplicate = ReportAndContinue/ReportAndStop and it is also possible to set KeyColumns and NameColumns. But this multistep process seems very cumbersome for what would seem should be a very normal operation, like adding Address1, Address2, Address3, Firstname, Zipcode, and other fields that normally are duplicated. I can't believe this cumbersome process need to be applied to all such fields? Thanks in advance. ssas share|improve this question edited Nov 27 '12 at 15:16 Josien 2,65032137 asked Aug 17 '11 at 21:40 Dave 2,23742958 add a comment| 13 Answers 13 active oldest votes up vote 25 down vote accepted This is usually a result of having both blanks and NULLs in the source table/view. Essentially, SSAS does this for every attribute SELECT DISTINCT COALESCE(attr,'') FROM SOURCE Analysis services by default converts NULLs to blanks, resulting in duplicate value blanks in the resulting feed - hence the error. I agree this sucks and is a major pain for new players. Solution : Remove all nulls from the data source, for example by using ISNULL / COALESCE everywhere, or filtering out rows containing null using where clause, or running update statement to replace all nulls with values before processing the cube, etc. share|improve this answer

{Name}\r\n\t\t \r\n\t\t\t {Groups}\r\n\t\t \r\n\t\t \r\n\t ","t2GroupHtmlBlock":"{Item}","viewAllHtmlBlock":"{Text}","linkHtmlBlock":"{Name}","searchResultItemHtmlBlock":"{Name}","viewMoreText":"and {MoreText} more..."}}; $(document).ready(function() { Core_GroupNavigation_SetMenuItems("#ctl00_ctl00_header_fragment_668884188__ceb445_ctl00_ctl00_ParentGroupListContainer", true, "ParentMoreListheader-fragment-668884188"); }); $(window).resize(function() { Core_GroupNavigation_SetMenuItems("#ctl00_ctl00_header_fragment_668884188__ceb445_ctl00_ctl00_ParentGroupListContainer", true, "ParentMoreListheader-fragment-668884188"); }); // ]]> Post an article Translate this page Powered a duplicate attribute key has been found when processing dimension by Microsoft® Translator Wikis - Page Details First published by a duplicate attribute key has been found when processing date dimension Heidi Steen - SQLUE When: 16 Sep 2013 10:46 AM Last revision by Craig Lussier (Microsoft Partner)

Attribute Key Cannot Be Found When Processing

When: 20 Jan 2014 8:01 PM Revisions: 9 Comments: 1 Options Subscribe to Article (RSS) Share this Engage! Wiki Ninjas Blog (Announcements) Wiki Ninjas on Twitter TechNet http://stackoverflow.com/questions/7099871/duplicate-attribute-key-error-when-attribute-is-not-a-key Wiki Discussion Forum Can You Improve This Article? Positively! Click Sign In to add the tip, solution, correction or comment that will help other users.Report inappropriate content using these instructions. Wiki > TechNet Articles > Analysis Services: Errors in the OLAP storage engine: A duplicate attribute key has been found when processing Analysis Services: Errors http://social.technet.microsoft.com/wiki/contents/articles/19726.analysis-services-errors-in-the-olap-storage-engine-a-duplicate-attribute-key-has-been-found-when-processing.aspx in the OLAP storage engine: A duplicate attribute key has been found when processing Article History Analysis Services: Errors in the OLAP storage engine: A duplicate attribute key has been found when processing The full error message is “SSAS Error: Errors in the OLAP storage engine: A duplicate attribute key has been found when processing: Table: , Column: . Value: . The attribute is .” Applies to: SQL Server Analysis Services (all supported versions), tabular and multidimensional models Introduction This error occurs during processing, when a duplicate key is found for a given attribute. Attribute keys are used to uniquely identify each member of an attribute. This is especially important when two or more attributes have the same value. For example, suppose you have two employees with a last name of Smith. In this case, you might want the attribute key for LastName to be EmployeeID so that each person is considered independently, and imported as separate rows during processing. The attr

message during dimension processing I've been asked about quite a few times so I thought it would be worth posting about it. The error message says http://ms-olap.blogspot.com/2009/11/duplicate-attribute-key-has-been-found.html that a duplicate attribute key has been found when processing as shown in the following screenshot for a test cube (I just processed one dimension here): Here's the full error message: Errors in the http://hownottoprogram.azurewebsites.net/?p=631 OLAP storage engine: A duplicate attribute key has been found when processing: Table: 'dbo_Product', Column: 'ProductGroup', Value: ''. The attribute is 'Product Group'. When you got to this article because you just ran into attribute key this problem you probably don't want to read much about the background but only want a solution. Unfortunately I found at least three possible reasons for this error message: Reason 1 (likely): The most likely reason for that error is that you are having NULL values in your attribute key column.If you simply created the attribute by dragging it from the source view, BIDS only sets the key duplicate attribute key column (name and value column default to the key column in this case), so for example if you have a column ‘Product Group' in your source table and drag it to your dimension, the product group (Text field) will automatically become the key for this attribute. The attribute is listed in the error message (in the example above it is ‘Product Group'). Solution: Try avoiding those NULL values in your data source (for example by using a DSV query and the T-SQL coalesce-function). When your source data is a data warehouse it's also a good practice to avoid null values as they complicate the queries to the data warehouse. Reason 2 (likely): You defined an attribute relationship between two attributes of the dimension but the data in your source tables violates the relationship. The error message gives you the name of the conflicting attribute (text part ‘The attribute is…'). The attributes has a relationship to another attribute but for the value stated in the error message (‘Value: …') there are at least two different values in the attribute that the relationship refers to. If you have BIDS Helper installed, you can also see the error details and all violating references when using

Date dimension) in an Analysis Services solution, you may not see all the values you would expect. Upon querying the dimension table directly all values may be present but only a subset is displayed in a browser: Note in the screenshot above there are no values for FY 2012 and values for 2013 begin in fiscal month 8 – February. In the underlying Date dimension table there are values for all the latter half of the 2012 financial year & all of the 2013 financial year. Another symptom may be a duplicate attribute key error when attempting to process the dimension: Details of this particular error are: Errors in the OLAP storage engine: A duplicate attribute key has been found when processing: Table: ‘dbo_dimDate', Column: ‘FinancialMonth', Value: '1′. The attribute is ‘Financial Month'. This is because by default, an attribute in a dimension is assumed to be a key – no duplicate values allowed. This is fine for attributes like Year which are sequential & not repeated, however the value '1 – January' in the Month attribute is repeated for every value of Year. Consequently the fix is to include the Year column as part of the key column for the Month attribute, follow these steps: Open the solution in Visual Studio, then open the dimension Select the Attribute Relationships tab Select the attribute that is being affected by this issue (Financial Month in this example), right-click & select Properties. In the Properties window, locate the ‘KeyColumns' property. By default it will be the attribute column alone. Click the ellipses button to bring up the Key Columns window. It will show just the attribute column in the Key Columns list. Select the source table for the dimension in the Source Table dropdown box Select the required column (Financial Year in this example) from the list of available columns & click the button to include it in the list of Key Columns. Click OK, the KeyColumns property for the attribute should read ‘(Collection)' Save the dimension structure then deploy & process the project. Browse the cube (or just the dimension alone) to see that all expected values are now populating. Reference: Period Dimension (Time Dimension) Creation with Year, Month, Day Hierarchy Posted in: SSAS ← WCF Service - 504 error or SocketException ErrorCode=10054 Validation in MVVM → Recent Posts Unit testing console applications Validation in MVVM SSAS - Errors in the OLAP storage engine: A duplicate attribute key has been found WCF Serv

 

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