ORA-01427单行子查询返回多行

Question

我有这样的查询：

select bb10.ID_SEKTOR_10 as kode, 
bb10.NAME_SEKTOR_10 as sektor10,
(
    select count(*) as HUBBNI_SEKTOR_EKONOMI10 
    from bbcust_debitur_dev 
    where HUBBNI_SEKTOR_EKONOMI10 = bb10.ID_SEKTOR_10
    and STATUS = 2 
    group by HUBBNI_SEKTOR_EKONOMI10
) as total_sek_10,
(
    select  sum( distinct bbcd.baki_debet) as baki_debet
    from bbcust_cashloan_dev bbcd, bbcust_debitur_dev bdd
    where bbcd.row_id = bdd.row_id 
    and bdd.HUBBNI_SEKTOR_EKONOMI10 = bb10.ID_SEKTOR_10
    and bbcd.status =1 and bdd.status=2
    group by bdd.row_id
) as total_rek_10
from BBCUST_SEKTOR_10_DEV bb10;

我收到错误

  

ORA-01427单行子查询返回多行

但在我拥有这样的数据之前，我没有任何错误。 此查询没有任何错误。

select bb10.ID_SEKTOR_10 as kode, 
bb10.NAME_SEKTOR_10 as sektor10,
(
    select count(*) as HUBBNI_SEKTOR_EKONOMI10 
    from bbcust_debitur_dev 
    where HUBBNI_SEKTOR_EKONOMI10 = bb10.ID_SEKTOR_10
    and STATUS = 2 
    group by HUBBNI_SEKTOR_EKONOMI10
) as total_sek_10
from BBCUST_SEKTOR_10_DEV bb10;

结果如下：

bbcust_cash_loan的结构如下：

对于数据库的结构是：bbcust_debitur_dev与BBCUST_SEKTOR_10_DEV和bbcust_cashloan_dev有关系。

我想计算bbcust_cashloan_dev中的每个值，但我需要知道BBCUST_SEKTOR_10_DEV中的所有数据。这就是我加入所有数据的原因，因此我从bbcust_cashloan_dev得到BBCUST_SEKTOR_10_DEV中数据的总价值。

你能告诉我如何修复我的查询吗？

Answer 1

试试这个.......

select bb10.ID_SEKTOR_10 as kode, 
bb10.NAME_SEKTOR_10 as sektor10,
(
    select count(*) as HUBBNI_SEKTOR_EKONOMI10 
    from bbcust_debitur_dev 
    where HUBBNI_SEKTOR_EKONOMI10 = bb10.ID_SEKTOR_10
    and STATUS = 2 
    ) as total_sek_10,
(
    select  sum( distinct bbcd.baki_debet) as baki_debet
    from bbcust_cashloan_dev bbcd, bbcust_debitur_dev bdd
    where bbcd.row_id = bdd.row_id 
    and bdd.HUBBNI_SEKTOR_EKONOMI10 = bb10.ID_SEKTOR_10
    and bbcd.status =1 and bdd.status=2
    ) as total_rek_10
from BBCUST_SEKTOR_10_DEV bb10;

group by bdd.row_id有可能返回多行。如果不了解您的业务，就无法提出建议。