Question

请注意，我不是开发人员，因此在这里提供任何帮助将不胜感激。

我的问题：我在Oracle Responsys中有一个列表，其中包含所有在旅行中预订的客户。我想查找所有缺少FIRST_NAME值（可能是Tba / Tbc / Null）的记录，因此我可以向主预订者发送电子邮件，要求他们更新其他客人的姓名详细信息。

主预订者将始终具有以'-1'结尾的CUSTOMER_ID_值。缺少名字值的记录将不会。

我想做的是，从列表中选择所有缺少名字的记录，并按BOOKING_LOCATOR（主要预订者及其附加来宾共享的值）对它们进行分组-然后仅返回主要预订者（ CUSTOMER_ID_以'-1'结尾的记录。

到目前为止，我通过查看其他帖子已经大致了解了Im，但是它并没有返回我所追求的东西：

SELECT $A$.BOOKING_LOCATOR, $A$.CUSTOMER_ID_, $A$.EMAIL_ADDRESS_
FROM
(
  SELECT $A$.BOOKING_LOCATOR FROM $A$ WHERE ($A$.FIRST_NAME IN ('TBA', 'TBC', 'Tba', 'Tbc') OR $A$.FIRST_NAME IS NULL) AND $A$.POLAR_BOOKING_STATUS != 'C' AND $A$.BOOKING_STATUS != 'Waitlist' AND $A$.EMBARK_DATE >= SYSDATE+1
  GROUP BY $A$.BOOKING_LOCATOR
) $A$
INNER JOIN (
  SELECT $A$.BOOKING_LOCATOR AS BOOKINGNUM, $A$.CUSTOMER_ID_, $A$.EMAIL_ADDRESS_ FROM $A$ WHERE $A$.CUSTOMER_ID_ LIKE '%-1'
) $A$ ON $A$.BOOKING_LOCATOR = $A$.BOOKINGNUM

有人可以指引我正确的方向吗？

Answer 1

为子选择项命名：

summary =

Answer 2

是的，可以做到。您可以为此使用Joins或OUTER APPLY。

SELECT A.BOOKING_LOCATOR, B.CUSTOMER_ID_, B.EMAIL_ADDRESS_
FROM
(
 SELECT $A$.BOOKING_LOCATOR FROM $A$ WHERE ($A$.FIRST_NAME IN ('TBA', 'TBC', 'Tba', 
'Tbc') OR $A$.FIRST_NAME IS NULL) AND $A$.POLAR_BOOKING_STATUS != 'C' AND 
$A$.BOOKING_STATUS != 'Waitlist' AND $A$.EMBARK_DATE >= SYSDATE+1
GROUP BY $A$.BOOKING_LOCATOR
) A
INNER JOIN (
SELECT $A$.BOOKING_LOCATOR AS BOOKINGNUM, $A$.CUSTOMER_ID_, $A$.EMAIL_ADDRESS_ FROM 
$A$ WHERE $A$.CUSTOMER_ID_ LIKE '%-1'
) B ON A.BOOKING_LOCATOR = B.BOOKINGNUM;

-2ND选项是通过使用OuterAPPLY来实现的。

SELECT A.BOOKING_LOCATOR, B.CUSTOMER_ID_, B.EMAIL_ADDRESS_
FROM
(
  SELECT $A$.BOOKING_LOCATOR FROM $A$ WHERE ($A$.FIRST_NAME IN ('TBA', 'TBC', 'Tba', 
 'Tbc') OR $A$.FIRST_NAME IS NULL) AND $A$.POLAR_BOOKING_STATUS != 'C' AND 
$A$.BOOKING_STATUS != 'Waitlist' AND $A$.EMBARK_DATE >= SYSDATE+1
 GROUP BY $A$.BOOKING_LOCATOR
) A
 Outer APPLY(
   SELECT $A$.BOOKING_LOCATOR AS BOOKINGNUM, $A$.CUSTOMER_ID_, $A$.EMAIL_ADDRESS_ FROM 
$A$ WHERE $A$.CUSTOMER_ID_ LIKE '%-1'
) B ON A.BOOKING_LOCATOR = B.BOOKINGNUM;

Answer 3

如果您想要预订的地点和主要客户，那么EXISTS就会浮现在脑海：

SELECT . . .   -- whatever columns you want
FROM $A$ a1
WHERE a.CUSTOMER_ID_ LIKE '%-1' AND
      EXISTS (SELECT 1
              FROM $A$ a
              WHERE a.FIRST_NAME IN ('TBA', 'TBC', 'Tba', 'Tbc') OR a.FIRST_NAME IS NULL) AND  
                    a.POLAR_BOOKING_STATUS <> 'C' AND  
                    a.BOOKING_STATUS <> 'Waitlist' AND  
                    a.EMBARK_DATE >= SYSDATE+1 AND
                    a.BOOKING_LOCATOR = a1.BOOKING_LOCATOR
              );

每个主要客户只返回一行。

您可以在一个表上有多个选择状态，然后将它们加入吗？

3 个答案: