mysql 按每 5 分鐘間隔匯總一天的數據量
為了按每 5 分鐘間隔匯總一天的數據量,我們可以采取以下步驟:
- 創建時間間隔表
create table time_intervals ( grouped_time time default null );
- 插入時間間隔數據
delimiter // create procedure inserttimeintervals() begin declare currenttime time default '00:00:00'; declare endtime time default '23:55:00'; truncate table time_intervals; while currenttime <= endtime do insert into time_intervals (grouped_time) values (currenttime); set currenttime = addtime(currenttime, '00:05:00'); end while; end // delimiter ;
- 按每 5 分鐘查詢真實數據
select date_format(create_time, '%y-%m-%d %h:%i') - interval (minute(create_time) mod 5) minute as grouped_time, count(*) as couns from interface_Access_frequency where date(create_time) = '2024-04-27' group by grouped_time;
- 使用 union 鏈接補零數據
(select date_format(date_format(create_time, '%y-%m-%d %h:%i') - interval (minute(create_time) mod 5) minute,'%h:%i') as grouped_time, count(*) as couns from interface_access_frequency where date(create_time) = '2024-04-27' group by grouped_time order by create_time desc ) union select date_format(grouped_time, '%h:%i') as grouped_time,0 as counts from time_intervals;
- 分組匯總結果
SELECT grouped_time, MAX(counts) AS counts FROM ((SELECT DATE_FORMAT(DATE_FORMAT(create_time, '%Y-%m-%d %H:%i') - INTERVAL (MINUTE(create_time) MOD 5) MINUTE,'%H:%i') AS grouped_time, COUNT(*) AS counts FROM interface_access_frequency WHERE DATE(create_time) = '2024-04-27' GROUP BY grouped_time) UNION SELECT DATE_FORMAT(grouped_time, '%H:%i') AS grouped_time,0 AS counts FROM time_intervals) a GROUP BY grouped_time ORDER BY grouped_time ASC;
最終,我們將得到按每 5 分鐘間隔匯總的當天數據量,即使沒有數據也會補零。
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