Hm. Have no idea what does it means:
table
type
possible_keys
key
key_len
ref
rows
Extra
p
ALL
NULL
NULL
NULL
NULL
1268
Using
where;
Using
temporary; Using filesort
chp
index
NULL
PRIMARY
8
NULL
1741
Using
index
c
eq_ref
PRIMARY
PRIMARY
4
chp.cat_id
1
pr
ALL
NULL
NULL
NULL
NULL
10231
-afan
On Thu, 2006-02-09 at 09:53 +1100, Chris wrote:
> Hi,
>
> Grab that query and run it through mysql with 'explain', so:
>
> explain SELECT p.prod_id, p.prod_name, p.prod_no, chp.cat_id,
> c.cat_name, c.cat_parent, pr.price
> FROM products as p
> LEFT JOIN categories_has_products as chp ON chp.prod_id = p.prod_id
> LEFT JOIN categories as c ON chp.cat_id = c.cat_id
> LEFT JOIN prices as pr ON pr.prod_id = p.prod_id
> WHERE prod_featured = '1'
> ORDER BY RAND(), pr.price ASC
> LIMIT 6
>
> That will show you whether you are using the database indexes or not.
>
> If you can't work it out then post the explain output.
>
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