SQL nested queries and subqueries - mysql

Question

i've been having an error with this query and i'm not sure how to fix it. this query is supposed to filter occupations stored in my database to match the volunteer's occupation. please help me fix my query. all the names in this query are correctly spelled, i double checked all the spellings before writing the query here.
the error says "#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'SELECT (SELECT count(*) FROM occupation_event WHERE event_id='8' AND occupationN' at line 1"
SELECT
*
FROM
volunteer_details
WHERE
user_id=73
AND
volunteer_occupation in (
SELECT
occupationName
FROM
occupation_event
WHERE
event_id=8
OR SELECT (
SELECT
count(*)
FROM
occupation_event
WHERE
event_id='8'
AND
occupationName = 'No Occupation Required') > 0 AS need
)

Answer 1

I think the error is the as need at the end. I would write this as:
SELECT vd.*
FROM volunteer_details vd
WHERE user_id = 73 AND
(vd.volunteer_occupation in (SELECT oe.occupationName FROM occupation_event oe WHERE oe event_id = 8) or
exists (select 1 from occupation_event oe where event_id = 8 and oe.occupationName = 'No Occupation Required')
);