在过去的几年里，我从这个社区学到了很多VBA，但现在我第一次冒险进入SQL，无法找到我需要的东西。我是自学成才，并且已经做了几天左右，需要有人帮助我学习，而不仅仅是提供解决方案。
创建一个查询，每个＆＃34;服务订单ID输出一行＆＃34; （SO_ID）并且每个＆＃34; SIO Reason＆＃34; （SIO_REASON）
如果有多个SIO_REASON代码，则为同一SO_ID返回多行的查询。
我从一个包含SO_ID的表开始，然后将几个表连接到它，这样我就可以在查询中获得所需的所有信息...这里是我的代码：
Select Distinct
a.SO_ID,
a.SERVICE_PERSON,
a.WORK_DONE_DT,
a.ACCOUNT_ID,
e.RATE_ID,
a.AREA,
d.SHORT_DESC,
d.UTIL_NAME,
b.SIO_REASON,
c.DSCR
FROM
SO_TABLE a
Left Join SERVICE_POINT_TABLE e ON
e.coy = a.coy
and e.SP_ID = a.SP_ID
and e.ACCOUNT_ID = a.ACCOUNT_ID
and (e.LINK_DT < a.WORK_DONE_DT and (e.UNLINK_DT >= a.WORK_DONE_DT or e.UNLINK_DT = 0))
LEFT JOIN SIO_REASON_TABLE b ON
b.coy = a.coy
and b.SO_ID = a.SO_ID
LEFT JOIN SIO_REASON_DESCRIPTION_TABLE c ON
c.coy = a.coy
and b.SIO_REASON = c.SIO_REASON
LEFT JOIN AREA_TABLE d ON
d.coy = a.coy
and a.AREA = d.AREA
WHERE
a.coy = 1
and a.util_type = 'A'
and a.status = 'C'
and a.type = 'SIO'
and (a.WORK_DONE_DT >= 20150201 and a.WORK_DONE_DT <= 20150228)
ORDER BY
a.WORK_DONE_DT,
a.SO_ID,
a.SERVICE_PERSON,
a.ACCOUNT_ID,
e.RATE_ID,
a.AREA,
d.SHORT_DESC,
d.UTIL_NAME,
b.SIO_REASON,
c.DSCR
这是我得到的输出，只是一个三行示例：
SO_ID | DT | ACCT | RATE | AREA | DESC | NAME |SIO_REASON | DSCR
____________________________________________________________________
11111 | a | 1234 | xxxx | 999 | NE | NEG | CB | CALLBACK
11111 | a | 1234 | xxxx | 999 | NE | NEG | FA | FURNREPR
11111 | a | 1234 | xxxx | 999 | NE | NEG | TM | TIMEMATERIAL
我想要的是一条上面具有相同标题的单行（SO_ID到NAME），然后将这些标题添加到最后。对于任何给定的SO_ID，最多可以有4个SIO_REASONS，所以我想要有四个选项，如果少于4个，那么就是空出来（总是至少有一个！）：
SIO1 | DSCR1 | SIO2 | DSCR2 | SIO3 | DSCR3 | SIO4 | DSCR4 |
_________________________________________________________________________
CB | CALLBACK | FA | FURNREPR | TM | TIMEMATERIAL | null | null |
我尽量做到尽可能详细 - 再次，我对此非常陌生，并且对子查询和类似的东西没有很好的把握。我非常愿意学习，它只是一个压倒性的东西，我不知道正确的方向去实现我想要的东西！
答案 0 :(得分：1)
对于其他任何挣扎于此的人，我终于找到了适合我的解决方案！我确定它不是传统上正确的，但它完成了工作！这就是它最终看起来像：
SELECT DISTINCT SO_ID,
SERVICE_PERSON,
WORK_DONE_DT,
ACCOUNT_ID,
RATE_ID,
AREA,
SHORT_DESC,
UTIL_NAME,
MAX(SIO_REASON_1) AS SIO_REASON_1,
MAX(DSCR_1) AS DSCR_1,
MAX(SIO_REASON_2) AS SIO_REASON_1,
MAX(DSCR_2) AS DSCR_2,
MAX(SIO_REASON_3) AS SIO_REASON_3,
MAX(DSCR_3) AS DSCR_3
FROM
(SELECT a.SO_ID,
a.SERVICE_PERSON,
a.WORK_DONE_DT,
a.ACCOUNT_ID,
e.RATE_ID,
a.AREA,
d.SHORT_DESC,
d.UTIL_NAME,
b.SIO_REASON,
c.DSCR,
CASE
WHEN b.SIO_REASON NOT IN ('CB', 'TM')
THEN b.SIO_REASON
END AS SIO_REASON_1,
CASE
WHEN b.SIO_REASON NOT IN ('CB', 'TM')
THEN c.DSCR
END AS DSCR_1,
CASE
WHEN b.SIO_REASON = 'CB'
THEN b.SIO_REASON
END AS SIO_REASON_2,
CASE
WHEN b.SIO_REASON = 'CB'
THEN c.DSCR
END AS DSCR_2,
CASE
WHEN b.SIO_REASON = 'TM'
THEN b.SIO_REASON
END AS SIO_REASON_3,
CASE
WHEN b.SIO_REASON = 'TM'
THEN c.DSCR
END AS DSCR_3
FROM SO_TABLE a
Left Join SERVICE_POINT_TABLE e ON
e.coy = a.coy
and e.SP_ID = a.SP_ID
and e.ACCOUNT_ID = a.ACCOUNT_ID
and (e.LINK_DT < a.WORK_DONE_DT and (e.UNLINK_DT >= a.WORK_DONE_DT or e.UNLINK_DT = 0))
LEFT JOIN SIO_REASON_TABLE b ON
b.coy = a.coy
and b.SO_ID = a.SO_ID
LEFT JOIN SIO_REASON_DESCRIPTION_TABLE c ON
c.coy = a.coy
and b.SIO_REASON = c.SIO_REASON
LEFT JOIN AREA_TABLE d ON
d.coy = a.coy
and a.AREA = d.AREA
WHERE a.coy = 1
AND a.util_type = 'A'
AND a.status = 'C'
AND a.type = 'SIO'
AND (a.WORK_DONE_DT >= 20150201
AND a.WORK_DONE_DT <= 20150228)
)
GROUP BY SO_ID, SERVICE_PERSON, WORK_DONE_DT, ACCOUNT_ID, RATE_ID,
AREA, SHORT_DESC, UTIL_NAME
ORDER BY WORK_DONE_DT,
SO_ID,
SERVICE_PERSON,
ACCOUNT_ID,
RATE_ID,
AREA,
SHORT_DESC,
UTIL_NAME
这给了我一个输出：
SIO1 | DSCR1 | SIO2 | DSCR2 | SIO3 | DSCR3 | SIO4 | DSCR4 |
_________________________________________________________________________
CB | CALLBACK | FA | FURNREPR | TM | TIMEMATERIAL | null | null |