Question

I would like to know if I can add an average column to this script whereby it averages the total number of inspections by the number of days. At the moment this report is showing 5 days worth of inspections. so I need the averageinspection column to divide the totalinspection by 5. is this possible?

SELECT     
    EstimName_String AS Inspector, 
    InspectionProcedureName AS inspection, 
    COUNT(*) AS TotalInspections
FROM
    UnitData_Vehicle
WHERE 
    DATEDIFF(day, InspectionDateTime, GETDATE()) = 1
GROUP BY 
    InspectionProcedureName, EstimName_String

I would like to show this:

Inspector   Inspection  Totalinspections    Averageinspections
Joe Bloggs  Inspection         20               4
Micky Mouse Inspection        100               20
Jack and Jill   Inspection     50               10

Answer 1

SELECT
    EstimName_String AS Inspector,
    InspectionProcedureName AS inspection,
    COUNT(*) AS TotalInspections,
    COUNT(*) / DATEDIFF(day, InspectionDateTime, GETDATE()) AS AverageinspectionsPerDay
FROM
     UnitData_Vehicle
WHERE
    (DATEDIFF(day,      InspectionDateTime, GETDATE()) = 1)
GROUP BY
    InspectionProcedureName, EstimName_String