based on id fill up dates for different columns in sqlserver - sql-server-2008

Question

Updated question. I have following tables:
project table
projectid, project
stores table
storeid,storename,projectid
projectupdates table
trackerid,projectid, storeid,activityid,date
activity table
activityid, activity
projects may or may not have stores
stores may or may not have activity
for a store an activity can be repeated
With this, I want all the projects, all the
stores and updates for a store.
The activity if present should show only the
latest date for the activity.
I also want a summary row that counts each
activity where activity has a date. (if null
do not count).
I tried with following your code:
SELECT P.ProjectID, S.StoreID, MAX(CASE WHEN Activity = 'Meas Perm Received' THEN Date ELSE NULL END) AS MeasPermRcvd, MAX(CASE WHEN Activity = 'Not Visited' THEN Date ELSE NULL END) AS NotVisited, MAX(CASE WHEN Activity = 'Not Visited' THEN ReasonID ELSE '' END) AS NotVisitedReason, MAX(CASE WHEN Activity = 'Visited & Measured' THEN Date ELSE NULL END) AS Measured
FROM dbo.ProjectUpdates AS T INNER JOIN dbo.Project AS P ON T.ProjectID = P.ProjectID INNER JOIN dbo.ProjectStores AS S ON T.StoreID = S.StoreID INNER JOIN dbo.Activity AS A ON T.ActivityID = A.ActivityID
GROUP BY P.ProjectID, S.StoreID
Then I tried with this additional query to get all projects and stores:
SELECT dbo.Project.ProjectID, dbo.ProjectStores.StoreID,dbo.StoreTrackerBase.MeasPermRcvd, dbo.StoreTrackerBase.NotVisited, dbo.StoreTrackerBase.NotVisitedReason, dbo.StoreTrackerBase.Measured
FROM dbo.Project FULL OUTER JOIN dbo.ProjectStores ON dbo.Project.ProjectID = dbo.ProjectStores.ProjectID FULL OUTER JOIN dbo.StorTrackerBase ON dbo.ProjectStores.StoreID = dbo.StoreTrackerBase.StoreID AND dbo.ProjectStores.ProjectID = dbo.StoreTrackerBase.ProjectID
This is returning all projects and all stores with latest date for activity.
Please advise whether this is good way of coding and whether performance will be good.
Please note I dont have a summary row in this query ( dont know how to do!)
thanks. Krishna

Answer 1

You can use MAX(CASE WHEN Activity = 'ActivityType' THEN Date END) with Group by ProjectName,Store
SELECT
ProjectName,Store,
MAX(CASE WHEN Activity = 'Visited' THEN Date ELSE NULL END) AS Visited,
MAX(CASE WHEN Activity = 'NotVisited' THEN Date ELSE NULL END) AS NotVisited,
MAX(CASE WHEN Activity = 'Finished' THEN Date ELSE NULL END) AS Finished
FROM Table1 T
INNER JOIN Project P
ON T.ProjectID = P.ProjectID
INNER JOIN Store S
ON T.StoreID = S.StoreID
INNER JOIN Activity A
ON T.ActivityID = A.ActivityID
GROUP BY ProjectName,Store