group by : syntactic example (sybase)

David Hartwig said:

>> Do you mean in a select statement? Such as:
>>
>> SELECT func(date) as month, count(*) FROM foo GROUP BY month;
>>
>> Or even:
>>
>> SELECT count(*) FROM foo GROUP BY func(date);
>>
>> The first is supported. The second would require some changes to the parser.

#2 was what I had in mind...

This is a pointless query, but it demonstrates a couple of
things that the sybase SQL interpreter supports:

select avg(datepart(minute,date)) from hires_events
group by datepart(hour,date)

1. you can apply stat functions such as avg and sum to
functions on columns as well as to raw columns

2. you can group by a function on a column

I think Oracle will do this also...

de

.............................................................................
:De Clarke, Software Engineer UCO/Lick Observatory, UCSC:
:Mail: de(at)ucolick(dot)org | "There is no problem in computer science that cannot:
:Web: www.ucolick.org | be solved by another level of indirection" --J.O. :