JOIN the same statement without WHERE clause

Question

I have the following table:

CREATE TABLE posts...
id INT(11),
time DATETIME,
...

And I want to know the highest ID in general, and I also want to know the latest post disregarding posts from the last hour so I can subtract them to get the number of posts from the past hour.

I could do two queries:

SELECT MAX(id) AS old_max FROM posts WHERE time < 
    DATE_SUB(NOW(), INTERVAL 1 HOUR);

And

SELECT MAX(id) AS max FROM posts;

But I'd like to have them in the same result set. How would I achieve this?

Answer 1

How about this;

SELECT (
SELECT MAX(id) AS old_max FROM posts WHERE time < 
DATE_SUB(NOW(), INTERVAL 1 HOUR)),
(SELECT MAX(id) AS max FROM posts)

Answer 2

Try this::

Select 

(SELECT MAX(id) AS max from posts),

(SELECT 
MAX(id) AS old_max 

FROM posts WHERE time < 
    DATE_SUB(NOW(), INTERVAL 1 HOUR));

Answer 3

This will also work:

SELECT MAX(id) AS old_max,
    (
        SELECT MAX(id) 
        FROM posts
        ) AS max
FROM posts
WHERE TIME < DATE_SUB(NOW(), INTERVAL 1 HOUR);

Answer 4

this should work:

SELECT (
SELECT MAX(id) AS old_max FROM posts WHERE time < DATE_SUB(NOW(), INTERVAL 1 HOUR)),
(SELECT MAX(id) AS max FROM posts)