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CREATE TABLE orders ( user_id int, created date ); INSERT INTO orders VALUES (1, '2022-03-01'),(1, '2022-03-02'),(1, '2022-03-03'),(1, '2022-03-04'),(1, '2022-03-05'), (1, '2022-03-06'),(1, '2022-03-07'),(1, '2022-03-08'),(1, '2022-03-09'),(1, '2022-03-10'), (1, '2022-03-11'),(1, '2022-03-12'),(1, '2022-03-13'),(1, '2022-03-14'),(1, '2022-03-15'), (1, '2022-03-16'),(1, '2022-03-17'),(1, '2022-03-18'),(1, '2022-03-19'),(1, '2022-03-20'), (1, '2022-03-21'),(1, '2022-03-22'),(1, '2022-03-23'),(1, '2022-03-24'),(1, '2022-03-25'), (1, '2022-03-26'),(1, '2022-03-27'),(1, '2022-03-28'),(1, '2022-03-29'),(1, '2022-03-30'), (1, '2022-03-31'), (1, '2022-04-01'),(1, '2022-04-02'),(1, '2022-04-03') ; SELECT user_id, count(distinct created) FROM orders WHERE created >= DATE_SUB(CURRENT_DATE, INTERVAL 30 DAY) GROUP BY user_id HAVING count(distinct created) >= 30;

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