卷王小萝莉

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题解 | #21年8月份练题总数#

SELECT COUNT(DISTINCT device_id) AS did_cnt, COUNT(question_id) AS question_cnt FROM question_practice_detail Q WHERE Q.date LIKE '2021-08%';

2024-03-19

2 198

题解 | #查询结果限制返回行数#

SELECT device_id FROM user_profile WHERE id IN ('1','2');

2024-03-07

0 179