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@ucolick.org | "There is no problem in computer science that cannot:
:Web: www.ucolick.org |  be solved by another level of indirection"  --J.O. :