Re: using LIMIT only on primary table

On Sat, 2 Mar 2002 17:35:31 -0500
"Dan Langille" <dan@langille.org> wrote:

> If I want the last 100 orders:
> 
> SELECT * FROM orders LIMIT 100;
> 
> If I want all the items on the last 100 orders, I'd start like this:
> 
> SELECT * 
> from orders, order_items 
> where order_items.order_id = orders.id
> LIMIT 100
> 
> But that will only give me the last 100 items, not 100 orders.
> 
> What I really want is 
> 
> SELECT * 
> from orders, order_items 
> where order_items.order_id = orders.id
> and exists
> (SELECT * from orders order by ID DESC limit 100);


This probably gives you all the items on the last 100 orders.
select *  from (select * from orders order by ID desc limit 10) as o      inner join order_items as oi       on
(oi.order_id= o.order_id)
 
;


> 
> But that gives me all orders, not just the first 100.
> 
> Adding a LIMIT 100 to the above doesn't work either.  It equates to the 
> first example.



Regards,
Masaru Sugawara