mysql 獲取規定時間段內的統計數據
按年統計
SELECT count(*), DATE_FORMAT(order_info.create_time, '%Y-%m-%d') AS count_by_date FROM order_info WHERE DATE_FORMAT(order_info.create_time, '%Y') = '2017' GROUP BY count_by_date ORDER BY NULL
按月統計
SELECT count(*), DATE_FORMAT(order_info.create_time, '%Y-%m-%d') AS count_by_date FROM order_info WHERE DATE_FORMAT(order_info.create_time, '%Y-%m') = '2017-04' GROUP BY count_by_date ORDER BY NULL
具體變換可以自己根據需求變更
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