题解 | #统计所有课程参加培训人次#
统计所有课程参加培训人次
https://www.nowcoder.com/practice/98aad5807cf34a3b960cc8a70ce03f53
select
sum(
length (course) - length (replace (course, ',', '')) + 1
) as staff_nums
from
cultivate_tb
统计所有课程参加培训人次
https://www.nowcoder.com/practice/98aad5807cf34a3b960cc8a70ce03f53
select
sum(
length (course) - length (replace (course, ',', '')) + 1
) as staff_nums
from
cultivate_tb
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