SQL group by date (hour),数据库按小时分组统计数据量
SELECT COUNT(1), TRUNC(BEGINTIME, 'HH24') FROM TASK -- WHERE BEGINTIME > '2022-03-01' GROUP BY TRUNC(BEGINTIME, 'HH24') ORDER BY COUNT(1) desc;
SELECT COUNT(1), TRUNC(BEGINTIME, 'HH24') FROM TASK -- WHERE BEGINTIME > '2022-03-01' GROUP BY TRUNC(BEGINTIME, 'HH24') ORDER BY COUNT(1) desc;