题解 | #21年8月份练题总数#
# 取21年 取8月
select count(distinct device_id) as did_cnt, count(question_id) as question_cnt
from question_practice_detail
where year(date) = 2021 and month(date) = 8;
# 取21年 取8月
select count(distinct device_id) as did_cnt, count(question_id) as question_cnt
from question_practice_detail
where year(date) = 2021 and month(date) = 8;
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