SQL Server query assistance needed

Question

I\'m storing a bunch of data in a view (converted MS Access queries to views). Now what I\'m trying to do is write a stored procedure to pull data based on when the data was add

Answer 1

You are using window function, but you are not filtering by it, so whats the point? If you want the earliest and the latest, choose rn = 1 :

Select Name, PlanID, ApptDate, 1stAppt,2ndappt, rn,
from (Select *,
            row_number() over (partition by PlanID Order BY AddedonDate desc) as rn
     from  vClientInfo
     Union All
     Select *, 
           row_number() over (partition by PlanID Order BY AddedonDate asc) as rn 
     from  vClientInfo)
WHERE rn = 1

If you want 1st appt from the earliest and 2ndappt from the latest :

Select Name, PlanID, ApptDate,
       MAX(CASE WHEN rnk = 1 then 1stAppt end) as 1stAppt,
       MAX(CASE WHEN rn = 1 THEN 2ndappt end) as 2ndAppt
from (Select *,
            row_number() over (partition by PlanID Order BY AddedonDate desc) as rn,
     0 as rnk
     from  vClientInfo
     Union All
     Select *,
           0 as rn,
           row_number() over (partition by PlanID Order BY AddedonDate asc) as rnk 
     from  vClientInfo)
GROUP BY Name,PlanID,ApptDate