题解 | #21年8月份练题总数#
21年8月份练题总数
https://www.nowcoder.com/practice/b8f30b239b454ed490367b53ea95607d
SELECT
COUNT(DISTINCT device_id),
COUNT(question_id)
FROM
question_practice_detail
WHERE
date LIKE '2021-08%'
COUNT(DISTINCT device_id),
COUNT(question_id)
FROM
question_practice_detail
WHERE
date LIKE '2021-08%'
