mysql获取相隔时间段的数据

思路：为时间段内的数据进行编序号，然后计算好相隔时间，拿到id作为搜索条件

SELECT * FROM (
SELECT
(@i:=@i+1) as i, id, data_send_time
FROM
jl_pims_machine_time mt,(select @i:=0) as it where mt.company_id = 1001 AND mt.machine_id = 1 order by mt.id desc
) tmp
WHERE
i IN (1,3,5)