#SQL
select a.ID,substring_index(substring_index(a.mSize,',',b.help_topic_id+1),',',-1)
from
tbl_name a
join
mysql.help_topic b
on b.help_topic_id < (length(a.mSize) - length(replace(a.mSize,',',''))+1)
order by a.ID;
SELECT
l.code '課code',
r.`name` '資源名稱',
r.path
FROM `p_course` c
LEFT JOIN `p_course_sub_relation` csr ON c.id = csr.`course_id`
LEFT JOIN `p_lesson` l ON csr.`sub_id` = l.`id`
LEFT JOIN `p_lesson_ware_relation` lwr ON l.id = lwr.`lesson_id`
LEFT JOIN `p_courseware` cw ON lwr.`ware_id` = cw.id
JOIN mysql.help_topic b ON b.help_topic_id < (LENGTH(cw.`resource_list`) - LENGTH(REPLACE(cw.`resource_list`,',',''))+1)
LEFT JOIN `r_resource` r ON r.`id` = SUBSTRING_INDEX(SUBSTRING_INDEX(cw.`resource_list`,',',b.help_topic_id+1),',',-1)
WHERE c.code IN ('C-04-42-01','C-04-41-01')
ORDER BY c.code,l.code,cw.code