Hey,
If you use group then except aggreate functions(count,sum..)
other items in your select list should be in your group list also.
Bernie Huang wrote:
> Hi, I have the following SQL:
>
> SELECT ltb.v_id,
> count(ltb.v_id) AS num_of_times_borrowed,
> vtb.equip_attr[1] AS year,
> vtb.equip_attr[3] AS model,
> vtb.equip_attr[4] AS type
> FROM log_tb ltb, vehicle_tb vtb
> WHERE ltb.v_id=vtb.equip_id
> GROUP BY ltb.v_id
> ORDER BY year;
>
> "ERROR: Attribute vtb.equip_attr must be GROUPed or used in an aggregate
> function"
>
> but, it didn't work. I want to know how many time each vehicle has been
> borrowed. Please help. Thanks.
>
> - Bernie
--
Jie LIANG
Internet Products Inc.
10350 Science Center Drive
Suite 100, San Diego, CA 92121
Office:(858)320-4873
jliang@ipinc.com
www.ipinc.com
