Hierarchical List of Work Items from TFS_Warehouse database

Question

I am trying to retrieve a hierarchical list of all 'Product Backlog' work items from TFS_Warehouse. Today is my first day working on TFS so I am not really aware of the schema/ or what table to look for.

I found two tables DimWorkItem and FactWorkItemLinkHistory. I tried extracting some information from these but no luck.

What I am trying to do is generate a Release Details list, which will show work items with state like New, Approved... I need to write a TSQL Statement to get this data.

Any help is appreciated.

Thanks, Vishal

Answer 1

I'm assuming you have already figured this out, but in case anyone else passes by you can use the GetWorkItemsTree UDF with a CROSS APPLY operator, passing it the root node System_Id and the relationship type to be used to traverse the tree, such as:

SELECT 
   ...
FROM
    DimWorkItem wi
CROSS APPLY
    GetWorkItemsTree(@TeamProjectCollectionGuid, wi.System_Id, N'Child', DEFAULT) wit
WHERE
    wi.System_Id = @RootId
    AND wi.System_RevisedDate = CONVERT(datetime, '9999', 126) -- latest revision

However, this UDF will only traverse a single relationship type and I recall there being a limitation to the traversal depth. If you need something more flexible you'll probably have to write it yourself; I did so using a UDF containing a recursive CTE on the [FactWorkItemLinkHistory] table which also provided for traversal of multiple relationship types.