Kurt,
GROUP BY wouldn't works that way :-)
That was my first thought :-)


>Andrus,
>
>You cannot compare multiple columns that way. Instead concatenate the rida and month columns together and compare them in your WHERE statement such as:
>

>DELETE FROM t1 ;
>  WHERE ( left(rida,2) + month ) NOT IN ;
>   (SELECT left(rida,2) +  MAX(month) FROM  t2 ;
>   group by 1)
>

>
>Kurt
>>I have tables
>>
>>

CREATE CURSOR t1 ( rida c(10), month c(6) )
>>CREATE CURSOR t2 ( rida c(10), month c(6) )

>>
>>I need to delete from table t1 so that only last month rows remain.
>>
>>I tried
>>
>>

DELETE FROM t1 ;
>>  WHERE ( left(rida,2),month ) NOT IN ;
>>   (SELECT left(rida,2), MAX(month) FROM  t2 ;
>>   group by 1)
>>

>>
>>but got error
>>
>>Function name is missing )
>>
>>
>>How to run this statement in VFP ?