select if(mod(result.id,16)=0,'汇总','') 汇总,result.starttime,result.endtime,result.`中奖数量`,result.`抽奖数量` from (
select
n.id,
when @starttime='' then @starttime:=starttime end ,
when mod(n.id,16)!=0 then @endtime:=endtime end,
if(mod(n.id,16)!=0 ,when @c1=-1 then @c1:=`中奖数量` else @c1:=@c1+`中奖数量` end,''),
if(mod(n.id,16)!=0 ,when @c2=-1 then @c2:=`抽奖数量` else @c2:=@c2+`抽奖数量` end,''),
when mod(n.id,16)=0 then @starttime else starttime end starttime,
when mod(n.id,16)=0 then @endtime else endtime end endtime,
when mod(n.id,16)=0 then @c1 else `中奖数量` end `中奖数量`,
when mod(n.id,16)=0 then @c2 else `抽奖数量` end `抽奖数量`,
when mod(n.id,16)=0 then @starttime:='' else null end ,
when mod(n.id,16)=0 then @endtime:='' else null end ,
when mod(n.id,16)=0 then @c1:=-1 else null end ,
when mod(n.id,16)=0 then @c2:=-1 else null end
from
nums n
join(
select t3.*,when mod(@rn+1,16)=0 then @rn:=@rn+2 else @rn:=@rn+1 end rn from (
select starttime,endtime,ifnull(`中奖数量`,0) `中奖数量`,ifnull(`抽奖数量`,0) `抽奖数量`
from (
select
id,
'2017-12-21 09:30:00'+ interval (id-1) minute starttime,
'2017-12-21 09:30:59'+ interval (id-1) minute endtime
from nums,
(select @rn:=0,@starttime:='',@endtime:='',@c1:=-1,@c2:=-1) vars
where id<=10000
AND
('2017-12-21 09:30:00'+ interval (id-1) minute)<=
(select max(actiontime)+interval '15' minute FROM award_gift_record WHERE awardactId=235)
) t1
join
(
SELECT
date_format(actiontime,'%Y-%m-%d %H:%i:00') 时间,
when AwardGiftID!=-1 then 1 else null end) 中奖数量,
FROM award_gift_record
WHERE awardactId=235
group by date_format(actiontime,'%Y-%m-%d %H:%i:00')
) t2 on(t2.时间 between t1.starttime and endtime)
group by starttime,endtime
order by starttime
) t3
) t4 on(n.id=t4.rn)
where
n.id <= (
select
ceil(timestampdiff(MINUTE,
min(actiontime),
max(actiontime) + interval '15' minute) / 15 * 16) + 15
FROM
award_gift_record
WHERE
awardactId = 235)
) result;
这里最核心的是,每15行生成一行,然后用自定义变量填充生成行.
在需求二的结果上 添加行号。这个行号每到 模16 就 加二。
case when mod(@rn+1,16)=0 then @rn:=@rn+2 else @rn:=@rn+1 end rn
这样行号会是这样
...
14
15
17
18
中间把16 空过去.
这样再用数字辅助表左连接这个结果。 就可以每15行多生成一行了。
最后通过自定义变量的运算,填充生成的行即可。
