Question

The Table(Log Analyzer) structure is :

I want to draw a line graph displaying the number of requests per minute. I want to write a query which displays two columns with the following information:

1. Date:Hour:Minute
2. Number of Requests

I have tried to write a sample query displaying requests per hour:

SELECT ( Str(Datepart(HOUR, TimeLog)) + '.00' ) AS 'From (hours)',
       ( Str(CASE
               WHEN Datepart(HOUR, TimeLog) + 1 = 24 THEN 00
               ELSE Datepart(HOUR, TimeLog) + 1
             END) + '.00' )AS 'To (hours)',
       Count(DISTINCT Request) AS 'Number Of Queries '
FROM   LogData
GROUP  BY Datepart(HOUR, TimeLog);

The problem with this is when I use MINUTE instead of HOUR it combines the minutes of
all hours and days, so it just displays 60 rows. I want all the rows to be separate according to the day and hour. How can this be achieved?

Answer 1

select  convert(nvarchar(16), TimeLog, 120) requestTime,
        count(*)
from    LogData
group by convert(nvarchar(16), TimeLog, 120)`