
mysql 按每 5 分钟间隔汇总一天的数据量
为了按每 5 分钟间隔汇总一天的数据量,我们可以采取以下步骤:
create table time_intervals ( grouped_time time default null );
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 ;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;(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;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;最终,我们将得到按每 5 分钟间隔汇总的当天数据量,即使没有数据也会补零。
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