Re: Syntax bug? Group by?

Mark Woodward wrote:
>> Hi, Mark,
>>
>> Mark Woodward wrote:
>>     
>>> Shouldn't this work?
>>>
>>> select ycis_id, min(tindex), avg(tindex) from y where ycis_id = 15;
>>>
>>> ERROR:  column "y.ycis_id" must appear in the GROUP BY clause or be used
>>> in an aggregate function
>>>
>>> If I am asking for a specific column value, should I, technically
>>> speaking, need to group by that column?
>>>       
>> Try:
>>
>> SELECT 15 as ycis_id, min(tindex), avt(tindex) from y where ycis_id = 15;
>>
>>
>>     
> This isn't a "SQL" question!!! This is a question of whether or not
> PostgreSQL is correct in requiring a "group by" in the query. I assert
> that since it is unabiguous as to what "ycis_id" should be, PostgreSQL
> should not require a grouping.
>
>   

Of course it's an SQL question. How can you ask about the correctness of 
a piece of text which purports to be SQL and then say it isn't an SQL 
question?

If you can point to a place in the spec or our docs that sanctions the 
usage you expect, then please do so, Until then I (and I suspect 
everyone else) will persist in saying it's not a bug.

cheers

andrew