Question

我有两个结果集。我打算获取第一个结果集中的记录，而不是第二个结果集中的记录：我的第一个结果集：

select * from (select k.foracid,k.acct_name, k.sol_id BRANCH_CODE, s.SOL_DESC BRANCH_NAME,k.ACCT_OPN_DATE,k.schm_code 
from tbaadm.gam k, tbaadm.sol s
where acct_cls_flg = 'N' and acct_ownership<>'O'
and s.sol_id = k.sol_id
and k.schm_type in('CAA', 'SBA', 'ODA', 'TDA'));

这里Foracid是独一无二的：

我的第二个结果：

select acctid from (select r.signid,
(case when r.acctid is not null then r.acctid else (select g.foracid from tbaadm.gam g where g.cif_id = r.custid) end)acctid,
(case when r.custid is not null then r.custid else (select i.cif_id from tbaadm.gam i where i.foracid = r.acctid) end)custid
from
(select cast(e.signid as varchar2(12))signid, cast(e.acctid as varchar2(16))acctid, 
cast(f.custid as varchar2(12))custid from svsuser.signotherinfo e, svsuser.signcustinfo f
where e.signid = f.signid)r);

这里我的acctid并不是唯一的，但它与第一个select语句中的foracid具有相同的值。现在我这样做：

select * from (select k.foracid,k.acct_name, k.sol_id BRANCH_CODE, s.SOL_DESC BRANCH_NAME,k.ACCT_OPN_DATE,k.schm_code 
    from tbaadm.gam k, tbaadm.sol s
    where acct_cls_flg = 'N' and acct_ownership<>'O'
    and s.sol_id = k.sol_id
    and k.schm_type in('CAA', 'SBA', 'ODA', 'TDA'))m
where m.foracid not in(
select acctid from (select r.signid,
    (case when r.acctid is not null then r.acctid else (select g.foracid from tbaadm.gam g where g.cif_id = r.custid) end)acctid,
    (case when r.custid is not null then r.custid else (select i.cif_id from tbaadm.gam i where i.foracid = r.acctid) end)custid
    from
    (select cast(e.signid as varchar2(12))signid, cast(e.acctid as varchar2(16))acctid, 
    cast(f.custid as varchar2(12))custid from svsuser.signotherinfo e, svsuser.signcustinfo f
    where e.signid = f.signid)r));

我得到了：

ORA-01427: single-row subquery returns more than one row

我应该做什么？

Answer 1

查询中出现此错误的唯一地方是这两个SELECT语句：

select g.foracid from tbaadm.gam g where g.cif_id = r.custid
...
select i.cif_id from tbaadm.gam i where i.foracid = r.acctid

你确定，对于每个cif_id，tbaadm.gam中只有一行，所以对于每个foracid？请尝试使用以下两个查询进行检查：

SELECT CIF_ID
FROM tbaadm.gam
HAVING COUNT(1) > 1
GROUP BY CIF_ID;

SELECT FORACID
FROM tbaadm.gam
HAVING COUNT(1) > 1
GROUP BY FORACID;

如果有多行，也可以尝试添加DISTINCT或AGGREGATE函数。例如：

select * from (select k.foracid,k.acct_name, k.sol_id BRANCH_CODE, s.SOL_DESC BRANCH_NAME,k.ACCT_OPN_DATE,k.schm_code 
    from tbaadm.gam k, tbaadm.sol s
    where acct_cls_flg = 'N' and acct_ownership<>'O'
    and s.sol_id = k.sol_id
    and k.schm_type in('CAA', 'SBA', 'ODA', 'TDA'))m
where m.foracid not in(
select acctid from (select r.signid,
      (case when r.acctid is not null then r.acctid else (select MIN(g.foracid) from tbaadm.gam g where g.cif_id = r.custid) end)acctid,
    (case when r.custid is not null then r.custid else (select MIN(i.cif_id) from tbaadm.gam i where i.foracid = r.acctid) end)custid
    from
    (select cast(e.signid as varchar2(12))signid, cast(e.acctid as varchar2(16))acctid, 
    cast(f.custid as varchar2(12))custid from svsuser.signotherinfo e, svsuser.signcustinfo f
    where e.signid = f.signid)r));

希望，这有帮助。

ORA-01427：单行子查询返回多个行select语句

1 个答案: