tim laqua dot com Thoughts and Code from Tim Laqua

29Sep/085

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).

21Jul/082

Dynamic MDX queries in TSQL

Say you want to run the same MDX query for each row in a given rowset. I needed to do this for alerting purposes, where there were different alert thresholds for different attribute values in a given dimension attribute. After struggling with passing a variable to the query argument of the OPENROWSET command, I finally found the documentation that clearly stated that the query argument CAN'T be a variable. Or a concatination of a string and a variable. I still don't understand why... but the suggested workaround is to construct a giant TSQL string and run it using the EXEC command.

Ok - but how do we get the results of the query? Basically, the only way to do this is to create a temporary table in the current scope and do an INSERT INTO that temp table in your giant TSQL query. It all ends up looking something like this: