SELECT
       ROUND(AVG(COUNT(Time_stamp))),
          MIN(COUNT(time_stamp)),
          MAX(COUNT(time_stamp))
     FROM
          cp_license_use
        Where time_stamp = parmTime
        and time_stamp >= SYSDATE-7
        group by Time_Stamp)

On Mon, Jan 28, 2002 at 05:27:15PM -0800, Lance Prais wrote:
> Why when I use the following SQL it get a 
> ORA-00937: not a single-group group function
> 
> What could I be doing wrong?
> 
> I am only trying to group on Time_stamp.
> 
> Thank you in advance  
> 
> SELECT
>       ROUND(AVG(COUNT(Time_stamp))),
>         MIN(COUNT(time_stamp)),
>         MAX(COUNT(time_stamp)),
>         Time_stamp
>     FROM
>         cp_license_use
>       Where time_stamp = parmTime
>       and time_stamp >= SYSDATE-7
>       group by Time_Stamp)
> 
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