Hi Sergey,

I tried your solution, but get "Queries of this sort are not supported" error.

Regards
Doug Johnston



>Hi Doug,
>
>Assuming that idnum is PK for mytable
>

>SELECT * FROM mytable t1
>  WHERE idnum IN (SELECT TOP 20 PERCENT idnum FROM mytable WHERE cgroup = t1.cgroup ORDER BY iscore)
>ORDER BY cgroup, iscore
>

>>
>>I have a VFP table with the following structure...
>>
>>idnum
>>keyword
>>cgroup
>>iscore
>>
>>...I have one SQL statement that gets the top 20 percent (iscore) of all records (100 records returns 20), and this works fine...
>>
>>SELECT TOP 20 PERCENT,* FROM Table ORDER BY iscore
>>
>>I am now trying to get the top 20 percent (iscore) of each group (cgroup) and am struggling for the correct SQL syntax.