mysql时间操作函数和存储过程
--*将表test.transport20140901表中的数据依照每五分钟一个间隔，统计各个路口的车流数量r--*@start_time 起始时间 是整点时间的五分钟间隔 如 2014-09-01 00:20:00
--*@end_time终止时间是整点的五分钟间隔且大于start_time如 2014-09-01 01:00:00
--*统计范围包括起始时间，但不包括终止时间
delimiter $
drop procedure transport_status;
create procedure transport_status(start_time datetime,end_time datetime)
begin
declare mid_start_time datetime;
declare mid_end_time datetime;
set mid_start_time=start_time;
set mid_end_time=date_add(start_time, interval 5 minute);
lab: while mid_start_time < end_time do
insert into
test.transport_status(stamp,stamp_time,address,car_count)
(select
FLOOR(UNIX_TIMESTAMP(time)/300) as stmp,
date_format(mid_end_time,'%Y-%m-%d %H:%i:%s') as tm,
address,
count(address) as cnt
from
test.transport20140901
where
time > date_add(mid_start_time, interval -1 second)
and time < mid_end_time
group by address);
set mid_start_time=date_add(mid_start_time, interval 5 minute);
set mid_end_time=date_add(mid_end_time, interval 5 minute);
end while lab;
end $
delimiter ;
call transport_status("2014-09-01 00:00:00","2014-09-2 00:00:00");
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