Error in SQL CASE in where statement during select - mysql

Question

I have a query that selects 3 random items from database table but I need to apply some more logic to the query based on the value of a field in the query.
This is what I have so far hope it makes sense. Have not fully tested it yet figured I would run it through you guys first see if there is anything that jumps out.
SELECT ord.id, keyword, url, daily_max
FROM orders AS ord
LEFT JOIN product_tasks AS tsk ON tsk.id = ord.task_id
LEFT JOIN product_groups AS grp ON grp.id = tsk.product_group
WHERE (
status = 'approved' AND
ord.total_actions_today < tsk.daily_max AND
grp.id = 1 AND
country_code = '$country' AND
(
CASE WHEN daily_max >= 5 THEN last_displayed < (NOW() - INTERVAL 30 MINUTE)
CASE WHEN daily_max >10 THEN last_displayed < (NOW() - INTERAVAL 5 MINUTE)
ELSE last_displayed < (NOW() - INTERAVAL 60 MINUTE)
)
)
GROUP BY ord.id
ORDER BY RAND()
LIMIT 3
Just tested the query and as I suspected I have my syntax wrong so any help would be appreciated:
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'CASE WHEN daily_max >10 THEN last_displayed < (NOW() - INTERAVAL 5 MINUTE) ' at line 14
Edit - Fixed
(After several attempts + edits):
SELECT ord.id, keyword, url, daily_max
FROM orders AS ord
LEFT JOIN product_tasks AS tsk ON tsk.id = ord.task_id
LEFT JOIN product_groups AS grp ON grp.id = tsk.product_group
WHERE (
status = 'approved' AND
ord.total_actions_today < tsk.daily_max AND
grp.id = 1 AND
country_code = 'us'
AND last_displayed <
CASE WHEN (daily_max >= 5) THEN (NOW() - INTERVAL 30 MINUTE)
WHEN (daily_max >10) THEN (NOW() - INTERVAL 5 MINUTE)
ELSE (NOW() - INTERVAL 60 MINUTE)
END
)
GROUP BY ord.id
ORDER BY RAND()
LIMIT 3
http://sqlfiddle.com/#!2/ac4499/1
Solved DOH missing ) in the where statement

Answer 1

Move the last_displayed out of the CASE, such that it is compared to a single value as projected out of the CASE statement:
WHERE...
AND last_displayed <
CASE WHEN (daily_max >= 5) THEN (NOW() - INTERVAL 30 MINUTE)
WHEN (daily_max >10) THEN (NOW() - INTERVAL 5 MINUTE)
ELSE (NOW() - INTERVAL 60 MINUTE)
END;
Also note a couple of typos - INTERVAL not INTERAVAL, and just one CASE is required.
SqlFiddle here

Answer 2

Your structure of your WHERE was not correct. Try the following:
SELECT ord.id, keyword, url, daily_max
FROM orders AS ord
LEFT JOIN product_tasks AS tsk ON tsk.id = ord.task_id
LEFT JOIN product_groups AS grp ON grp.id = tsk.product_group
WHERE (
status = 'approved' AND
ord.total_actions_today < tsk.daily_max AND
grp.id = 1 AND
country_code = '$country' AND
(
CASE WHEN daily_max >10 THEN (NOW() - INTERAVAL 5 MINUTE)
WHEN daily_max >= 5 THEN (NOW() - INTERVAL 30 MINUTE)
ELSE (NOW() - INTERAVAL 60 MINUTE)
END > last_displayed
)
)
GROUP BY ord.id
ORDER BY RAND()
LIMIT 3