Question

I made MSSQL query that calculates total unique IP address and total IP records for past 30 days.

SELECT count(IPAddress) AS totalPageHits, count(DISTINCT IPAddress) AS totalVisitors, count(DateTime)
FROM recordTable
WHERE DateTime > GETDATE()-30

Now I am having a hard time to calculate average daily page hits and average daily unique visitors.
I have tried to use AVG but it gives me an error message saying “Operand data type varchar is invalid for avg operator.”
Any help is greatly appreciated.

Answer 1

SELECT  AVG(HitCount) as AverageHits,
    AVG(UniqueHitCount) As AverageUniqueHits
FROM
(
SELECT  COUNT(IPAddress) as HitCount,
        COUNT(DISTINCT IPAddress) as UniqueHitCount,
        DATEDIFF(d, GETDATE(), DateTime) as Day
FROM tblHitCounter
WHERE DateTime > GETDATE() - 30
GROUP BY DATEDIFF(d, GETDATE(), DateTime)
) sub