Question

我试图获取总数.of＆＃34; jml_pddk_miskin＆＃34;在每个区（＆＃34; kecamatan＆＃34;）与升序。但是我收到了错误，因为＆＃34;子查询返回多行＆＃34;。

这是我的疑问：

select 
mkec.id AS id,mkec.nama AS kecamatan,rpb.tahun AS tahun,
ifnull((select sum(rpb.jml_pddk_miskin) 
        from rekap_penduduk_bps rpb 
        join master_kelurahan mkel on mkel.id = rpb.id_kelurahan 
        where 
        mkel.id_kecamatan = mkec.id 
        and rpb.id_kelurahan = mkel.id 
        group by rpb.id ),0) AS total_miskin 
from master_kecamatan mkec 
join rekap_penduduk_bps rpb 
group by mkec.nama 
order by mkec.id

这是以上查询的结果： result query

我想要这样的结果...... result query

Answer 1

你的内心疑问

select sum(rpb.jml_pddk_miskin) 
from rekap_penduduk_bps rpb 
join master_kelurahan mkel on mkel.id = rpb.id_kelurahan 
where 
mkel.id_kecamatan = mkec.id 
and rpb.id_kelurahan = mkel.id 
group by rpb.id

显然返回了多行（通过group by子句）。

Answer 2

试试这个，

   SELECT mkec.id AS id,mkec.nama AS kecamatan,rpb.tahun AS tahun,IFNULL((SELECT SUM(rpb.jml_pddk_miskin) 
FROM (rekap_penduduk_bps rpb JOIN master_kelurahan mkel ON mkel.id = rpb.id_kelurahan) WHERE 
mkel.id_kecamatan = mkec.id AND rpb.id_kelurahan = mkel.id GROUP BY rpb.id HAVING rpb.id_kelurahan = mkel.id ),0)
 AS total_miskin FROM master_kecamatan mkec JOIN rekap_penduduk_bps rpb ON mkec.id= rpb.id_kelurahan GROUP BY mkec.nama ORDER BY mkec.id

（mysql）子查询返回多行

2 个答案: