tim laqua dot com Thoughts and Code from Tim Laqua

6Apr/101

Excel 2007 Hangs When Trying to Edit an OLAP Cube Filter

Ok, it doesn't hang every time you try to edit an OLAP cube filter, but sometimes - it appears to. In reality, I've never seen it permanently hang - just kind of go away for a while. Here's the basic symptom that the business will report to you:

"Excel freezes (or hangs) when I try to change this filter"

Most of us have seen this at one point or another and shrugged it off as a busy time or processing is going on or there are cats clogging up the tubes, etc. Tonight, I finally decided to figure out what's causing it.

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12Mar/0919

SSAS Cube Action: Cells Target type, URL Action type Example

Originally, we were charged with figuring out how to display SSAS cube measure descriptions via ToolTip in Excel 2007. If that's your plan, forget it - after some reading up on the interwebs, it appears that Excel doesn't even request the Description property. Additionally, if you want to add a description to Calculated Members, you have to hack it in (yuck).

So we went with a simple, albeit relatively crude (but effective), alternative - implementing a URL action for Cells so users can easily link out to a definition of the measure they're looking at.

Create a new action in your cube (Open up the cube definition, Actions tab) and configure similar to this:

Name: View Member Definition
 
Action Target
    Target Type: Cells
    Target object: All cells
 
Action Content
    Type: URL
    Action expression: "http://i.domain.com/doc/Defs.aspx#" 
                       + [Measures].CurrentMember.Name
 
Additional Properties
    Invocation: Interactive
    Description: View Member Definition
    "View Definition Of " + [Measures].CurrentMember.Name + "..."
    Caption is MDX: True

When you're finished, it should look something like this:
ssascubecellsurlaction

For a possible way to implement the aforementioned Definitions.aspx, check out http://timlaqua.com/2009/03/scrolling-to-and-highlighting-anchor-target-via-javascript/ - which describes an early endpoint we used for this project.

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5Nov/080

How to add a calculated measure (calculated field) to an Excel 2007 PivotTable with a SSAS data source

As it turns out, you can do it programatically as explained by Allan Folting here:
Microsoft Excel: Common Questions Around Excel 2007 OLAP PivotTables:
http://blogs.msdn.com/excel/archive/2008/02/05/common-questions-around-excel-2007-OLAP-PivotTables.aspx

And the parts that I have to keep looking up (I use my blog as a notebook for things I don't want to forget ;-) :

Sub AddCalculatedMeasure() 
	Dim pvt As PivotTable
	Dim strName As String
	Dim strFormula As String 
 
	Set pvt = Sheet1.PivotTables("PivotTable1")
	strName = "[Measures].[Internet Sales Amount 25 %]"
	strFormula = "[Measures].[Internet Sales Amount]*1.25"
	pvt.CalculatedMembers.Add Name:=strName, Formula:=strFormula, Type:=xlCalculatedMember 
End Sub 
 
Sub AddCalculatedMember() 
	Dim pvt As PivotTable
	Dim strName As String
	Dim strFormula As String 
 
	Set pvt = Sheet1.PivotTables("PivotTable1")
	strName = "[Product].[Product Categories].[Bikes].[Mountain Bikes].[Mountain-100 Silver, 38 25 %]"
	strFormula = "[Product].[Product Categories].[Bikes].[Mountain Bikes].[Mountain-100 Silver, 38]*1.25"
	pvt.CalculatedMembers.Add Name:=strName, Formula:=strFormula, Type:=xlCalculatedMember
	pvt.ViewCalculatedMembers = True 
End Sub 
 
Sub AddNamedSet() 
	Dim pvt As PivotTable
	Dim strName As String
	Dim strFormula As String
	Dim cbf As CubeField 
 
	Set pvt = Sheet1.PivotTables("PivotTable1")
	strName = "[My Mountain Bikes]"
	strFormula = "[Product].[Product Categories].[Bikes].[Mountain Bikes].children"
	pvt.CalculatedMembers.Add Name:=strName, Formula:=strFormula, Type:=xlCalculatedSet
	Set cbf = pvt.CubeFields.AddSet(Name:="[My Mountain Bikes]", Caption:="Mountain Bikes") 
End Sub

He also mentions that you can expose these members to Excel Services 2007 by creating the new objects and then removing the VBA code - very useful article.

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29Sep/082

Changing Server Names in Excel 2007 Embedded Workbook Connections

Ok, so you want to migrate servers, eh? Well - all your business users pry have a couple thousand Pivot Reports lying around that point to the old server. We need to point all references to the old server at the new server.

There are two places these references exist (afaik) - The My Data Sources folder (Windows XP / Excel 2007) which holds all of the odc objects for the logged in user, and the real pain - Embedded data sources in Excel Workbooks.

For the odc objects - you can just loop through the My Data Sources folder files and do a little find/replace action.

For the Excel files - we need to first find all the files, then loop through them and hunt for embedded Connections. Once we find a connection, we can just blindly replace occurrences of the old server name with the new server name. The first thing we need here is a function we can call recursively to go hunt down all the excel files - then we loop through and play with the connections (when found).

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