按年份在组内选择最后n条记录

Question

我有一张表，我需要获取最后12条记录，这些记录按年（）月（）ASC分组。我尝试使用下面的查询，但结果不符合预期。

SELECT * FROM 
(
    SELECT 
        id, 
        tanggal, 
        date_format(tanggal,'%b-%Y') as bulan, 
        sum(sisa_pokok) as jumlah 
    FROM transaksi_detail 
    GROUP BY date_format(tanggal,'%b-%Y') 
    ORDER BY id DESC LIMIT 12
) sub 
ORDER BY id ASC

查询结果如下

我的预期结果是按年（），月（）按布兰列顺序排序，如下所示

Bulan     jumlah
Mar-2018  26600000
Oct-2017  1000000
Sept-2017 4500000
and so on....

Answer 1

EXTRACT(YEAR FROM bulan) as year



SELECT EXTRACT(YEAR FROM tanggal) as year , EXTRACT(MONTH FROM tanggal) as month, id  FROM  table_name  group by year order by month

你可以获得相同的年份，就像你可以获得一个月之后的组合，并命令我希望它会帮助你

Answer 2

这适用于我的情况

SELECT * FROM 
(
    SELECT 
        id, 
        tanggal, 
        month(tanggal), 
        year(tanggal),
        date_format(tanggal,'%b-%Y') as bulan, 
        sum(sisa_pokok) as jumlah 
    FROM transaksi_detail 
    GROUP BY date_format(tanggal,'%b-%Y') 
    ORDER BY id DESC LIMIT 12
) sub 
ORDER BY year(tanggal), month(tanggal) ASC