表机构，统计name的数量
sql语句 mysql.help_topic id自增的临时表
select (substring_index(substring_index(a.name,';',b.help_topic_id+1),';',-1)) 'name',COUNT('abc') 'count'
from test_group a
join mysql.help_topic b on b.help_topic_id < (length(a.name) - length(replace(a.name,';',''))+1)
group by `name`
结果：
参考：https://blog.csdn.net/xcymorningsun/article/details/73436568