T-SQL - Retrieve Task Hierarchy In Project Server

Article

In this article, I will explain how to get the Task Hierarchy for a specific project in Project Server via T-SQL.

Scenario

In Project Server, I have a project schedule with the summary task and subtasks, as shown below.

Based on the requirement, I would like to show the Task Hierarchy for each task in Tasks View "[MSP_EpmTask_UserView]" for a specific project.

Steps

To get the Task Hierarchy, we will use the Recursive Queries Using Common Table Expressions, as shown below.

Open Microsoft SQL Management Studio > Connect to the SQL Server Instance.

Create a "New Query" and make sure that you are using the Project Database (in this article, the project database name is "ProjectWebApp").

Get the Tasks for a specific project based on its ProjectUID from form "[MSP_EpmTask_UserView]" View, as shown below.
- Note - Change the ProjectUID with your ProjectUID.

-- Get the tasks based on the Project ID
SELECT TOP 1000 [TaskName],TaskIsSummary,TaskIndex
FROM [ProjectWebApp].[dbo].[MSP_EpmTask_UserView]
WHERE ProjectUID = 'D2BB8AF3-FB22-E711-8193-A0481C8F7133' and TaskIndex<>0

As we have mentioned, we will use the Recursive Queries Using Common Table Expressions to get the Task Hierarchy as the below query.

Note - Change the ProjectUID with your ProjectUID.

WITH TasksRecursive(ProjectUID,TaskTitle, TaskUID, TaskParentUID, TaskName, Level)
AS
(
SELECT ProjectUID,TaskName as TaskTitle, TaskUID, TaskParentUID, CAST(TaskName AS NVARCHAR(MAX)), 0
FROM dbo.MSP_EpmTask_UserView WITH(NOLOCK)
WHERE TaskIndex <> 0
UNION ALL
SELECT UV.ProjectUID,TasksRecursive.TaskTitle,TasksRecursive.TaskUID,UV.TaskParentUID,CAST(UV.TaskName ASNVARCHAR(MAX)) + ' -> ' + CAST(TasksRecursive.TaskName AS NVARCHAR(MAX)) , TasksRecursive.Level + 1
FROM TasksRecursive
Inner JOIN dbo.MSP_EpmTask_UserView UV WITH(NOLOCK)
ON TasksRecursive.ProjectUID = UV.ProjectUID AND TasksRecursive.TaskParentUID = UV.TaskUID
WHERE TaskIsSummary = 1 AND TasksRecursive.TaskParentUID <> UV.TaskParentUID
)
SELECT X.TaskTitle,
(select TaskName from MSP_EpmTask_UserView where TaskIndex = 0 and ProjectUID = 'D2BB8AF3-FB22-E711-8193-A0481C8F7133') + ' -> ' + X.TaskName as 'Task Hierarchy'
FROM TasksRecursive X
INNER JOIN (SELECT ProjectUID, TaskUID, MAX(Level) as 'Level' FROM TasksRecursive GROUP BY ProjectUID, TaskUID) Y
ON X.ProjectUID = Y.ProjectUID AND X.TaskUID = Y.TaskUID AND X.Level = Y.Level
WHERE X.ProjectUID = 'D2BB8AF3-FB22-E711-8193-A0481C8F7133'