怎么取最大月份对应的数量?

想取这个编码,最近的月份对应的这个数量,比如第一个取9月对应的数量12

Snipaste_2022-03-02_15-55-21.png

FineReport 用户P6K2W9322 发布于 2022-3-2 15:59 (编辑于 2022-3-2 16:38)
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axingLv6专家互助
发布于2022-7-30 16:13

select top 1 LABST from table where 编码='xx' order by date1 desc

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CD20160914Lv8专家互助
发布于2022-3-2 16:01(编辑于 2022-3-2 16:52)

最大月 是2021-10对应的数量1吗?

select t0.* from (

select 'A001' as bl_code,'2020-01' as date_code,46 as number_s union all

select 'A001' as bl_code,'2020-02' as date_code,27 as number_s union all

select 'A003' as bl_code,'2020-03' as date_code,66 as number_s union all

select 'A003' as bl_code,'2020-04' as date_code,28 as number_s union all

select 'A003' as bl_code,'2020-05' as date_code,54 as number_s union all

select 'A003' as bl_code,'2020-06' as date_code,35 as number_s 

) t0 

join (

select t.bl_code,max(date_code) as date_code from (

select 'A001' as bl_code,'2020-01' as date_code,46 as number_s union all

select 'A001' as bl_code,'2020-02' as date_code,27 as number_s union all

select 'A003' as bl_code,'2020-03' as date_code,66 as number_s union all

select 'A003' as bl_code,'2020-04' as date_code,28 as number_s union all

select 'A003' as bl_code,'2020-05' as date_code,54 as number_s union all

select 'A003' as bl_code,'2020-06' as date_code,35 as number_s 

) t

group by t.bl_code

) t1 on t0.bl_code=t1.bl_code  and t0.date_code=t1.date_code

原始明细

image.png

最后出来的结果

image.png

  • 用户P6K2W9322 用户P6K2W9322(提问者) 怎么取呢
    2022-03-02 16:37 
  • CD20160914 CD20160914 回复 用户P6K2W9322(提问者) 你到底要取哪一个是2021-10的数据。不是2021-09的数据?
    2022-03-02 16:38 
  • CD20160914 CD20160914 回复 用户P6K2W9322(提问者) 上面改了。。语句类似这样你自己用你的表就行了。我是模拟的数据。
    2022-03-02 16:51 
最佳回答
0
wangfutaoLv5初级互助
发布于2022-3-2 16:03

每个月的最小值吗?

  • 用户P6K2W9322 用户P6K2W9322(提问者) 取找到的值,最近的那个月
    2022-03-02 16:38 
  • wangfutao wangfutao 回复 用户P6K2W9322(提问者) 这样就可以取到了,试试: select 月份 from 表 where LABST=12 order by 年份,月份 DESC
    2022-03-02 16:42 
最佳回答
0
@Lv6资深互助
发布于2022-3-2 16:03
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  • 最后回答于:2022-7-30 16:13
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