Question

SELECT id, company_id, user_id, valid_until, price 
FROM  `classifieds` 
WHERE  `user_id` = 1
AND  `valid_until` >  now()
AND  `price` = -2

this query gives me one row, and it works ok…

as soon as i add a statement

SELECT id, company_id, user_id, valid_until, price 
FROM  `classifieds` 
WHERE  `user_id` = 1
AND  `valid_until` >  now()
AND  `price` = -2
AND  `company_id` != 23

it gives me nothing!!!

the row I am getting in first query has company_id NULL

id  company_id  user_id valid_until price
35136   NULL    1   2012-02-12 08:06:37 -2

Please advise

EDIT:

I don’t want rows that have company_id NULL. I want ALL rows (NULL and not NULL) except for (company_id) value 23.

Answer 1

SELECT id, company_id, user_id, valid_until, price 
FROM  `classifieds` 
WHERE  `user_id` = 1
AND  `valid_until` >  now()
AND  `price` = -2
AND  (`company_id` IS NULL OR `company_id` != 23)

this seems to do the trick