> I have two tables : the first for categories and the second for
> subcategories.I want to get a result like Yahoo! For each category ,
> the sql
> query must return maximum 3 subcategories. I can't use "limit" in a
> subquery
> because I use Postgresql 7.0.
Examples :
table CATEG :
ida categ1 X2 Y3 Z
table SUBCATEG :
idb subcateg ida
1 x1 1
2 x2 1
3 x3 1
4 x4 1
5 y1 2
6 y2 2
7 z1 3
I 'd like to obtain a table with maximum 2 subcateg per categ :
table result :
categ subcateg X x1 X x2 Y y1 Y y2 Z z1
any help?
Regards,
Rachel