Yes, that is what I'll have to do. Just counting the number of tuples
returned from this query would work. I was just wondering why this wasn't
implemented in postgres or what the valid syntax would be. Thanks!
--------------------------------------------------------------------------
Aaron Holtz
ComNet Inc.
UNIX Systems Specialist
Email: aholtz@bright.net
"It's not broken, it just lacks duct tape."
--------------------------------------------------------------------------
On Apr 28, Oleg Broytmann molded the electrons to say....
>On Wed, 28 Apr 1999, Aaron Holtz wrote:
>> This seems like a simple SQL command, but I'm getting errors.
>> Running 6.5.0 under RedHat 5.2:
>>
>> db=> select count(distinct customer_username) from customerdata;
>> ERROR: parser: parse error at or near "distinct"
>>
>> How do you get a count of distinct data output via postgres? I can always
>> just count the number of tuples returned but this seemed to be a valid
>> query.
>
> In SQL, it is just pretty valid query. But Postgres does not implement
>SELECT COUNT(DISTINCT).
>
> Do instead
>SELECT DISTINCT(customer_username) FROM customerdata;
> and count it in your program.
>
>> --------------------------------------------------------------------------
>> Aaron Holtz
>> ComNet Inc.
>> UNIX Systems Specialist
>> Email: aholtz@bright.net
>> "It's not broken, it just lacks duct tape."
>> --------------------------------------------------------------------------
>
>Oleg.
>----
> Oleg Broytmann http://members.xoom.com/phd2/ phd2@earthling.net
> Programmers don't die, they just GOSUB without RETURN.
>
