Oracle SQL代码生成错误

Question

当我从下面的SELECT语句（AS SUCH：/\*FACODE\*/）注释掉FACODE字段时，SQL会生成数据。这个简单的改变会产生数据，即。我没有错误。然而，当我从周围的FACODE场删除评论，我得到它说'

单行查询产生多行

错误。

我试过注释掉这段代码的不同部分，看看代码会失败，整个代码只会失败，但我不会在上面解释过的时候不要注释FACODE FIELD。

有人可以协助吗？我一直试图弄清楚这个没有成功。

SELECT FIRST_DAY, LAST_DAY, SA_TYPE_CD, FA_ID, CRE_DTTM, WORK_DTTM, ADDRESS, 

NAME, COMPLETE_TYPE, /*FACODE,*/ WONUM, HOLIDAYS, 
CASE WHEN TRIM(TYPE) IN ('AB','AS') THEN AMOUNT ELSE 0 END AMOUNT, 
CASE WHEN TRIM(TYPE) IN ('CA','CC','CCC','CR','NRR','AB','AS','CL') 
THEN TYPE ELSE 'CO' END FILT_TYPE, 
CASE 
WHEN WORK_DTTM IS NULL 
THEN (
    (SELECT COUNT(*) 
    FROM DUAL 
    WHERE TO_CHAR(CRE_DTTM + LEVEL - 1, 'DY') NOT IN ('SAT', 'SUN') 
    CONNECT BY LEVEL <= SYSDATE - CRE_DTTM) - HOLIDAYS + 
(DECODE(TO_CHAR(CRE_DTTM,'DY'),'SAT',1,'SUN',1,0)) 
) 
WHEN WORK_DTTM < CRE_DTTM THEN 0 
ELSE (
    (SELECT COUNT(*) 
    FROM DUAL 
     WHERE TO_CHAR(CRE_DTTM + LEVEL - 1, 'DY') NOT IN ('SAT', 'SUN') 
     CONNECT BY LEVEL <= WORK_DTTM - CRE_DTTM + 1) - HOLIDAYS + 
     (DECODE(TO_CHAR(CRE_DTTM,'DY'),'SAT',1,'SUN',1,0) + 
(DECODE(TO_CHAR(WORK_DTTM,'DY'),'SAT',1,'SUN',1,0))) 
) END DAYS 
FROM (SELECT :START_DT FIRST_DAY, 
    :END_DT LAST_DAY, 
    SA.SA_TYPE_CD, 
    FA.FA_ID, 
    FA.CRE_DTTM, 
    FO.WORK_DTTM, 
    (SELECT ADDRESS1 
    || ' ' 
    || ADDRESS2 
    || ' ' STATE 
    FROM CI_PREM 
    WHERE PREM_ID = SP.PREM_ID 
) ADDRESS, 
    (SELECT ENTITY_NAME 
    FROM CI_PER_NAME 
    WHERE PER_ID  = ACCT.PER_ID 
    AND NAME_TYPE_FLG = 'PRIM' 
    AND PRIM_NAME_SW = 'Y' 
) NAME, 
    (SELECT SUM(CUR_AMT) 
    FROM CI_FT 
    WHERE SA_ID  = SA.SA_ID 
    AND PARENT_ID = 'REFDMGCL' 
    AND FREEZE_SW = 'Y' 
    AND FREEZE_DTTM >= :START_DT 
) AMOUNT, 
    (SELECT CC_TYPE_CD 
    FROM CI_CC 
    WHERE PER_ID = PER.PER_ID 
    AND CC_DTTM = 
    (SELECT MAX(CC.CC_DTTM) 
    FROM CI_CC CC 
    WHERE CC.PER_ID = PER.PER_ID 
    AND TRIM(CC.CC_TYPE_CD) IN ('CA','CC','CCC','CO','CR','NRR', 'AS', 'AB', 
'CL', 'FAREQ', 'FOLREQ', 'GEN') 
    AND CC.CC_CL_CD = 'DAMC' 
    ) 
) TYPE, 
    (SELECT CC_TYPE_CD 
    FROM CI_CC 
    WHERE CC_ID  = STEP.CC_ID 
    AND CC_TYPE_CD IN ('CA','CC','CCC','CO','CR','NRR', 'AS', 'AB', 'CL', 
'FAREQ', 'FOLREQ', 'GEN') 
    AND CC_DTTM  = 
    (SELECT MAX(CC_DTTM) FROM CI_CC WHERE CC_ID = STEP.CC_ID 
    ) 
) COMPLETE_TYPE, 
--RNDB 20151019 
(select char_val from ci_fa_char where char_type_cd='FA_CODE' and 
fa_id=fa.fa_id) FACODE, 
(select adhoc_char_val from ci_fa_char where char_type_cd='CM-WONUM' and 
fa_id=fa.fa_id) WONUM, 
--RNDB 20151019 
    (SELECT COUNT(1) 
    FROM ci_cal_hol 
    WHERE holiday_dt     >= fa.cre_dttm 
    AND holiday_dt     <= DECODE(fo.work_dttm, NULL, sysdate, 
fo.work_dttm) 
    AND TO_CHAR(holiday_dt, 'DY') NOT IN ('SAT', 'SUN') 
) HOLIDAYS, 
    SYSDATE 
FROM CI_FO FO, 
    CI_FA FA, 
    CI_SA SA, 
    CI_SA_SP SAP, 
    CI_SP SP, 
    CI_ACCT_PER ACCT, 
    CI_FA_STEP STEP, 
    CI_PER PER 
WHERE FO.FO_ID  = FA.FO_ID 
AND FA.SP_ID  = SP.SP_ID 
AND FA.FA_ID  = STEP.FA_ID 
AND SAP.SP_ID  = SP.SP_ID 
AND SAP.SA_ID  = SA.SA_ID 
AND sap.start_dttm = 
    (SELECT MAX(t1.start_dttm) 
    FROM ci_sa_sp t1, 
    ci_sa s 
    WHERE t1.sa_id     = s.sa_id 
    AND s.sa_status_flg   <> '70' 
    AND t1.sp_id     = sap.sp_id 
    AND NVL(t1.stop_dttm, sysdate) = 
    (SELECT MAX(NVL(t2.stop_dttm, sysdate)) 
    FROM ci_sa_sp t2, 
     ci_sa 
    WHERE t2.sa_id   = ci_sa.sa_id 
    AND ci_sa.sa_status_flg <> '70' 
    AND t2.sp_id    = sap.sp_id 
    ) 
) 
AND NVL(sap.stop_dttm, sysdate) = 
    (SELECT MAX(NVL(t2.stop_dttm, sysdate)) 
    FROM ci_sa_sp t2, 
    ci_sa 
    WHERE t2.sa_id   = ci_sa.sa_id 
    AND ci_sa.sa_status_flg <> '70' 
    AND t2.sp_id    = sap.sp_id 
) 
AND SA.SA_STATUS_FLG NOT IN ('70') 
AND SA.ACCT_ID   = ACCT.ACCT_ID 
AND ACCT.MAIN_CUST_SW  = 'Y' 
AND ACCT.PER_ID   = PER.PER_ID 
AND FA.FA_TYPE_CD   = 'DMG CL' 
--RNDB 20151019 - Show Cancelled Orders 
--AND FA.FA_STATUS_FLG  <> 'X' 
--AND FO.FO_STATUS_FLG  <> 'X' 
AND FA.SCHED_DTTM  >= :START_DT 
AND FA.SCHED_DTTM  <= :END_DT 
ORDER BY SA.SA_TYPE_CD) 

Answer 1

此SQL中的FACODE引用了一个子查询，该子查询返回多条记录。

(select char_val from ci_fa_char where char_type_cd='FA_CODE' and 
fa_id=fa.fa_id) FACODE 

您必须通过向其他列添加更多的条件/条件来限制此查询返回的记录数。