你这个时间段内是跨多个天,没办法判断具体哪天多少条订单
使用 group by 和order by 表名order,可能会与mysql的order by冲突 SELECT date_time, COUNT(*) all_num FROM order GROUP BY data_time ORDER BY data_time;
SELECT date_time, COUNT(*) all_num FROM order GROUP BY data_time ORDER BY data_time;
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