我想加入一个select in select in select with table，我不必从表中的选择结果中找到customer_no。 另外，为了优化和缩短执行时间，我应该如何编写脚本？ 离。
SELECT DISTINCT customer_no,
str_data_expirare_1,
data_expirare_buletin_1,
str_data_expirare_2,
data_expirare_buletin_2
FROM (SELECT customer_no,
str_data_expirare_1,
data_expirare_buletin_1,
str_data_expirare_2,
data_expirare_buletin_2
FROM (SELECT customer_no,
str_data_expirare_1,
normalize_date (str_data_expirare_trim_1)
AS data_expirare_buletin_1,
str_data_expirare_2,
normalize_date (str_data_expirare_trim_2)
AS data_expirare_buletin_2
FROM (SELECT customer_no,
str_data_expirare_1,
REGEXP_REPLACE (str_data_expirare_1,
'[[:punct:]]',
'')
AS str_data_expirare_trim_1,
str_data_expirare_2,
REGEXP_REPLACE (str_data_expirare_2,
'[[:punct:]]',
'')
AS str_data_expirare_trim_2
FROM (SELECT Q1.customer_no,
Q1.set_act_id_1,
NVL (SUBSTR (set_act_id_1,
INSTR (set_act_id_1,
'+',
1,
5)
+ 1,
LENGTH (set_act_id_1)),
'NULL')
AS str_data_expirare_1,
Q1.set_act_id_2,
NVL (SUBSTR (set_act_id_2,
INSTR (set_act_id_2,
'+',
1,
5)
+ 1,
LENGTH (set_act_id_2)),
'NULL')
AS str_data_expirare_2
FROM STAGE_CORE.IFLEX_CUSTOMERS Q1
WHERE Q1.set_act_id_1 IS NOT NULL/*AND Q1.PERS_LAST_NAME LIKE 'LACAN'*/
)))
WHERE str_data_expirare_1 <> 'NULL'
AND data_expirare_buletin_1 - SYSDATE < 0
AND ( data_expirare_buletin_2 =
TO_DATE ('30-DEC-99', 'DD-MM-YYYY')
OR data_expirare_buletin_2 < SYSDATE)) T1
JOIN STAGE_CORE.IFLEX_CUSTOMERS_REPRES T2
ON T1.CUSTOMER_NO = T2.representative
JOIN STAGE_CORE.VW_IFLEX_ACCOUNTS_IBAN t3
ON t3.Cust_key <> T2.representative
WHERE T2.relationship <> 'EXTERN' AND T2.REPRESENTATIVE <> T2.REF_NO
查询必须查找所有身份证已过期且已在其他人帐户（来自银行）授权但未开立任何帐户的人。
VW_IFLEX_ACCOUNTS_IBAN
UNIT_ID CUST_KEY ACCOUNT_NO IBAN AC_OPEN_DATE ACC_ISOPEN
51 875497 xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx 29/02/2016 O
51 875497 xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx 08/03/2016 C
51 875497 xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx 01/03/2016 O
751 875497 xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx 12/08/2011 C
466 875497 xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx 22/01/2013 O
IFLEX_CUSTOMERS_REPRES
REF_NO CATEGORY TITULAR REPRESENTATIVE RELATIONSHIP
875497 C 875497 535555 UNICA
875497 C 875497 565796 UNICA
875497 C 875497 875497 PRIMARY-MEANS I AM AUTHORIZED ON MY ACCOUNT
875497 C 875497 875497 UNICA-MEANS I AM AUTHORIZED ON MY ACCOUNT
875497 C 875497 0O00000 EXTERN -- MEANS EVERYONE CAN PUT MONEY ON MY ACCOUNT
IFLEX_CUSTOMERS
CUSTOMER_NO LEGACY_CUSTOMER_NUMBER_KEY UNIT_ID CUST_CATEGORY CUST_CLASSIFICATION CUST_TYPE KYC_CUST_TYPE CIF_SINCE FISCAL_ID FULL_NAME FISCAL_RESIDENCE_COUNTRY NIF_EXPIRED_DATE NIF SET_ACT_ID_1 SET_ACT_ID_2
875497 875497 xxx RETAIL 80 I R 254911 2548614654 LACAN MARIA ADRIANA RO 01/03/2016 CI+XX+8646844+SPCLEP SIMM+01-Oct-2015+06-Dec-2022 +FN+FN+++
输出：
CUSTOMER_NO STR_DATA_EXPIRARE_1 DATA_EXPIRARE_BULETIN_1 STR_DATA_EXPIRARE_2 DATA_EXPIRARE_BULETIN_2
535555 29-Apr-16 29-Apr-16 NULL 30-Dec-99
0Jxx1ds0 09-Sep-16 09-Sep-16 NULL 30-Dec-99
2xx8ds 24-Mar-16 24-Mar-16 NULL 30-Dec-99
2756719 20-Feb-17 20-Feb-17 NULL 30-Dec-99
此客户不得拥有该银行的任何帐户
答案 0 :(得分：0)
坦率地说，我将忽略那些庞大的代码并使用您应该发布的重点突出的可重复测试案例回答问题:)
您需要的是反加入。使用left join语法将Customers与Accounts连接，然后过滤Account键为null的结果。这为您的客户提供了无帐户。但是inner join关于客户和代表，以确保客户集仅限于那些也是代表的客户。
select c.customer_no
, c.expired_date
from customers c
inner join customers_repres cr
on cr.representative_id = c.customer_no
left outer join accounts_iban ai
on ai.cust_key = c.customer_no
where c.expired_date is not null -- ?? indicates expired ID ??
and ai.cust_key is null
答案 1 :(得分：0)
解决：
select * from STAGE_CORE.IFLEX_CUSTOMERS c
join
STAGE_CORE.IFLEX_CUSTOMERS_REPRES cr
on c.CUSTOMER_NO=cr.REPRESENTATIVE
left join STAGE_CORE.VW_IFLEX_ACCOUNTS_IBAN a
on a.cust_key=cr.REPRESENTATIVE
where cr.RELATIONSHIP<>'PRIMARY'
and a.CUST_KEY is not null