SELECT COUNT(distinct device_id) AS did_cnt ,count(question_id) AS question_cnt
FROM question_practice_detail
WHERE date BETWEEN'2021-08-01'and'2021-08-31'
SELECT COUNT(distinct device_id) AS did_cnt ,count(question_id) AS question_cnt
FROM question_practice_detail
WHERE date BETWEEN'2021-08-01'and'2021-08-31'
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