David Garamond wrote:
Dear SQL masters,
The query for "latest price for each product" goes like this (which I
can grasp quite easily):
SELECT * FROM price p1
WHERE ctime=(SELECT MAX(ctime) FROM price p2 WHERE p1.product_id=p2.product_id)
or:
SELECT * FROM price p1
WHERE NOT EXISTS (SELECT
> The query for "latest price for each product" goes like this (which I
> can grasp quite easily):
>
> SELECT * FROM price p1
> WHERE ctime=(SELECT MAX(ctime) FROM price p2 WHERE
> p1.product_id=p2.product_id)
>
> or:
>
> SELECT * FROM price p1
> WHERE NOT EXISTS (SELECT * FROM price p2 WHERE
Dear SQL masters,
The query for "latest price for each product" goes like this (which I
can grasp quite easily):
SELECT * FROM price p1
WHERE ctime=(SELECT MAX(ctime) FROM price p2 WHERE p1.product_id=p2.product_id)
or:
SELECT * FROM price p1
WHERE NOT EXISTS (SELECT * FROM price p2 WHERE
p
