添加列时缺少SQL结果

试图找出导致SQL Server查询不返回结果的问题。我有一个查询，它指出在单个采购订单的尺寸级别上有多个唯一的“请求交付日期”。我使用countanddistinct来实现这一点。在我添加“采购订单项目编号”和“需求交付日期”字段之前，它工作得非常完美——这是业务部门要求的。我不确定这会导致问题的原因-作为参考，我们的采购订单表层是页眉、项目、大小-大小是最精细的，并且是基于SAP的

查询：

SELECT E.TEAM_MEMBER_NAME [EMPLOYEE],
       H.PO_TYPE,
       H.PO_ISSUE_DATE,
       S.PO_NUMBER,
       S.MATERIAL,
       M.DESCRIPTION,
       H.PO_ORDERED_QUANTITY [PO_QUANTITY], -- if you sue SUM(S.PO_ORDERED_QUANTITY - you get more results but wrong totals
       K.BUSINESS_SEGMENT_DESC,
       S.PO_REQ_DELIV_DATE,
       S.PO_ITEM_NUMBER


FROM   PDX_SAP_USER..VW_PO_SIZE S --- you can use .. insetead of .dbo.
JOIN   ADI_USER_MAINTAINED..SCM_PO_Employee_Name E --- join the po to employee assigment table
ON     S.PO_NUMBER = E.PO_NUMBER
JOIN   PDX_SAP_USER..VW_PO_HEADER H 
ON     E.PO_NUMBER = H.PO_NUMBER 
JOIN   PDX_SAP_USER..VW_PO_ITEM I 
ON     E.PO_NUMBER = I.PO_NUMBER 
JOIN   PDX_SAP_USER..VW_MM_MATERIAL M 
ON     E.MATERIAL = M.MATERIAL 
JOIN   PDX_SAP_USER..vw_kd_BUSINESS_SEGMENT K 
ON     M.BUSINESS_SEGMENT_CODE = K.BUSINESS_SEGMENT_CODE

WHERE  I.PO_BALANCE_QUANTITY > 0 ---exclude any fully received PO's
AND NOT EXISTS (SELECT * FROM VW_PO_ITEM I1 WHERE DEL_INDICATOR = 'L' AND I.PO_NUMBER = I1.PO_NUMBER)

GROUP BY S.PO_NUMBER, 
         E.TEAM_MEMBER_NAME, 
         H.PO_TYPE, 
         H.PO_ISSUE_DATE, 
         S.MATERIAL, 
         M.DESCRIPTION,
         K.BUSINESS_SEGMENT_DESC,
         H.PO_ORDERED_QUANTITY,
         S.PO_REQ_DELIV_DATE,
         S.PO_ITEM_NUMBER

HAVING COUNT(DISTINCT S.PO_REQ_DELIV_DATE) > 1

ORDER BY S.PO_NUMBER

添加与结果一起工作的查询：

SELECT E.TEAM_MEMBER_NAME [EMPLOYEE],
       H.PO_TYPE,
       CONVERT(VARCHAR(12),H.PO_ISSUE_DATE,101) [PO_ISSUE_DATE],
       S.PO_NUMBER,
       S.MATERIAL,
       M.DESCRIPTION,
       H.PO_ORDERED_QUANTITY [PO_QUANTITY], --- if you use SUM(S.PO_ORDERED_QUANTITY) - you get more results but wrong totals
       K.BUSINESS_SEGMENT_DESC


FROM   PDX_SAP_USER..VW_PO_SIZE S --- you can use .. insetead of .dbo.
JOIN   ADI_USER_MAINTAINED..SCM_PO_Employee_Name E --- join the po to employee assigment table
ON     S.PO_NUMBER = E.PO_NUMBER
JOIN   PDX_SAP_USER..VW_PO_HEADER H 
ON     E.PO_NUMBER = H.PO_NUMBER 
JOIN   PDX_SAP_USER..VW_PO_ITEM I 
ON     E.PO_NUMBER = I.PO_NUMBER 
JOIN   PDX_SAP_USER..VW_MM_MATERIAL M 
ON     E.MATERIAL = M.MATERIAL 
JOIN   PDX_SAP_USER..vw_kd_BUSINESS_SEGMENT K 
ON     M.BUSINESS_SEGMENT_CODE = K.BUSINESS_SEGMENT_CODE

WHERE  I.PO_BALANCE_QUANTITY > 0 ---exclude any fully received PO's
AND NOT EXISTS (SELECT * FROM VW_PO_ITEM I1 WHERE DEL_INDICATOR = 'L' AND I.PO_NUMBER = I1.PO_NUMBER)

GROUP BY S.PO_NUMBER, 
         E.TEAM_MEMBER_NAME, 
         H.PO_TYPE, 
         H.PO_ISSUE_DATE, 
         S.MATERIAL, 
         M.DESCRIPTION,
         K.BUSINESS_SEGMENT_DESC,
         H.PO_ORDERED_QUANTITY

HAVING COUNT(DISTINCT S.PO_REQ_DELIV_DATE) > 1

ORDER BY S.PO_NUMBER

结果:

EMPLOYEE                       PO_TYPE PO_ISSUE_DATE PO_NUMBER  MATERIAL           DESCRIPTION                              PO_QUANTITY                             BUSINESS_SEGMENT_DESC
------------------------------ ------- ------------- ---------- ------------------ ---------------------------------------- --------------------------------------- ----------------------------------------------------------------------------------------------------
Christopher Olson              NB      01/19/2017    0282238419 CD7078             ESS 3S PANT WVN                          2054                                    CORE APP MEN SPORT ADIDAS
Juan Gomez                     NB      02/23/2017    0282524995 S98775             ESS LIN P/O FT                           103                                     CORE APP MEN SPORT ADIDAS
Christopher Olson              NB      03/09/2017    0282598957 BK7410             ESS LGO T P SJ                           619                                     ATHLETICS APP MEN ADIDAS
Juan Gomez                     NB      03/28/2017    0282706115 S97155             ESS LIN TIGHT                            961                                     CORE APP WOMEN SPORT ADIDAS
Juan Gomez                     NB      09/21/2017    0283752965 CF8152             BOS LABEL                                7900                                    ATHLETICS APP MEN ADIDAS
Julie Lange-May                12      10/02/2017    0283796594 DQ1421             WOVEN JACKET W                           1020                                    ATHLETICS APP WOMEN ADIDAS
Kekai Ariola                   NB      10/10/2017    0283837426 AC7366             PW HU HOLI Tennis Hu MC                  5655                                    STATEMENT FTW ADIDAS
Cody Lofquist                  NB      11/10/2017    0283944933 DB2061             PREDATOR TANGO 18.1 TR                   1756                                    FOOTBALL FTW ADIDAS
Andrew Zapata                  05      11/13/2017    0283961402 CG6440             NEMEZIZ 18.1 FG W                        543                                     FOOTBALL FTW ADIDAS
Christopher Olson              NB      11/20/2017    0283981666 CV7748             ASSITA 17 GK Y                           1648                                    FOOTBALL APP GENERIC ADIDAS
Cody Lofquist                  NB      11/21/2017    0283984539 DB2165             COPA 18.1 FG                             501                                     FOOTBALL FTW ADIDAS
Julie Lange-May                NB      11/26/2017    0284043157 CE4368             I GRPHC STSET                            1333                                    ORIGINALS APP KIDS ADIDAS
Trey Pflug                     NB      11/27/2017    0284048754 CQ3168             SOLAR BOOST M                            3500                                    RUNNING FTW MEN ADIDAS
Dave Laws                      NB      11/28/2017    0284059045 DB2966             YEEZY 500                                15334                                   YEEZY FTW ADIDAS
Dave Laws                      NB      11/28/2017    0284059047 DB2966             YEEZY 500                                12584                                   YEEZY FTW ADIDAS
Christopher Olson              NB      12/06/2017    0284094060 BJ9165             TASTIGO17 SHO W                          7522                                    FOOTBALL APP GENERIC ADIDAS
Christopher Olson              NB      12/06/2017    0284094212 BK0350             TIRO17 TRG PNTW                          7091                                    FOOTBALL APP GENERIC ADIDAS
Cody Lofquist                  NB      12/08/2017    0284107301 DB2062             PREDATOR TANGO 18.1 TR                   2110                                    FOOTBALL FTW ADIDAS
Trey Pflug                     NB      12/11/2017    0284115640 BC0674             SOLAR BOOST W                            1752                                    RUNNING FTW WOMEN ADIDAS
Kim Moreland                   NB      12/12/2017    0284137355 DJ3033             D2M K SHT                                1730                                    CORE APP WOMEN SPORT ADIDAS
Cody Lofquist                  NB      12/12/2017    0284141196 DB2126             PREDATOR TANGO 18.3 IN                   1988                                    FOOTBALL FTW ADIDAS
Cody Lofquist                  NB      12/12/2017    0284141253 AQ0612             NEMEZIZ MESSI TANGO 18.3 TF              526                                     FOOTBALL FTW ADIDAS
Dave Laws                      NB      12/15/2017    0284170426 DB2966             YEEZY 500                                2918                                    YEEZY FTW ADIDAS
Cody Lofquist                  NB      12/16/2017    0284174671 DB2248             X 18.1 FG                                668                                     FOOTBALL FTW ADIDAS
Cody Lofquist                  NB      12/16/2017    0284174673 DB2039             PREDATOR 18.1 FG                         489                                     FOOTBALL FTW ADIDAS
Christopher Olson              ER      12/20/2017    0284207872 BS4250             TASTIGO17 SHO                            404                                     FOOTBALL APP GENERIC ADIDAS
Ben Paul                       NB      12/19/2017    0284208137 CG0584             REAL A JSY                               811                                     FOOTBALL APP LICENSED ADIDAS
Julie Lange-May                NB      01/07/2018    0284316616 DN4273             UAS BEANIE                               120                                     ORIGINALS APP MEN ADIDAS
Cody Lofquist                  NB      01/08/2018    0284319552 DB2063             PREDATOR TANGO 18.1 TR                   2001                                    FOOTBALL FTW ADIDAS
Cody Lofquist                  NB      01/19/2018    0284464341 DB2214             X 18+ FG                                 582                                     FOOTBALL FTW ADIDAS
Cody Lofquist                  NB      01/19/2018    0284464343 DB2013             PREDATOR 18+ FG                          2201                                    FOOTBALL FTW ADIDAS
Cody Lofquist                  NB      01/19/2018    0284464344 DB2072             NEMEZIZ 18+ FG                           1467                                    FOOTBALL FTW ADIDAS
Cody Lofquist                  NB      01/19/2018    0284464346 DB2251             X 18.1 FG                                620                                     FOOTBALL FTW ADIDAS
Cody Lofquist                  NB      01/19/2018    0284464348 DB2167             COPA 18.1 FG                             1714                                    FOOTBALL FTW ADIDAS
Cody Lofquist                  NB      01/19/2018    0284464349 DB2089             NEMEZIZ MESSI 18.1 FG                    988                                     FOOTBALL FTW ADIDAS
Cody Lofquist                  NB      01/19/2018    0284464350 DB2040             PREDATOR 18.1 FG                         2061                                    FOOTBALL FTW ADIDAS
Cody Lofquist                  NB      01/19/2018    0284465944 DB2001             PREDATOR 18.3 FG                         7008                                    FOOTBALL FTW ADIDAS
Cody Lofquist                  NB      01/23/2018    0284489924 772109             SAMBA CLASSIC                            419                                     FOOTBALL FTW ADIDAS
Andrew Zapata                  05      02/02/2018    0284539184 DH3869             CLIMA 3.0 TEE                            1853                                    ACTION SPORTS APP ADIDAS
Cody Lofquist                  NB      02/06/2018    0284550445 BB0571             Goletto VI FG J                          5562                                    FOOTBALL FTW ADIDAS
Cody Lofquist                  NB      02/24/2018    0284666220 DM2092             MLS ASG OMB                              424                                     FOOTBALL ACC HW ADIDAS
Christopher Olson              NB      01/19/2018    0284666914 BP9111             D2M 3S SHORT                             11811                                   CORE APP MEN SPORT ADIDAS
Cody Lofquist                  NB      02/27/2018    0284684097 019228             MUNDIAL TEAM                             657                                     FOOTBALL FTW ADIDAS
Cody Lofquist                  NB      03/06/2018    0284704098 CD4683             GENERICWCBOX                             80000                                   FOOTBALL ACC HW ADIDAS
Kekai Ariola                   NB      03/08/2018    0284728508 BB7619             Sobakov                                  1775                                    ORIGINALS FTW MEN ADIDAS
Kim Moreland                   NB      03/08/2018    0284730274 BP9733             ULT SS T                                 2557                                    TRAINING APP MEN ADIDAS
Kekai Ariola                   05      03/27/2018    0284865999 B37532             EQT SUPPORT SK PK W                      347                                     ORIGINALS FTW WOMEN ADIDAS
Kekai Ariola                   05      03/27/2018    0284866000 B37545             EQT SUPPORT SK PK W                      357                                     ORIGINALS FTW WOMEN ADIDAS
Kim Moreland                   NB      04/06/2018    0284914322 DH3591             Tech Tee                                 10042                                   TRAINING APP WOMEN ADIDAS
Cody Lofquist                  NB      04/10/2018    0284930265 CW5627             Pred FS JR MN                            1651                                    FOOTBALL ACC HW ADIDAS
Kekai Ariola                   NB      04/10/2018    0284930449 B41794             PW TENNIS HU                             315                                     ORIGINALS FTW MEN ADIDAS

(51 row(s) affected)

或者你可以采用这样的方法：

with data as (
    select
        count(distinct S.PO_REQ_DELIV_DATE)
            over (partition by S.PO_NUMBER) as rdd_count
        <insert rest of main query>
)
select ... from data
where rdd_count > 1
order by S.PO_NUMBER;

至于理解原因，我想您已经看到过其他查询，其中人们向GROUPBY子句添加列，以便绕过关于非聚合的神秘错误消息。如果不是这样的话，那么你已经看到了那些令人困惑的系统，它们允许一种非标准的行为，这种行为可以给出一点错误都没有的结果

通常人们想要完成的事情是这样的：我已经在根据客户ID进行分组，但我也希望结果中包含客户名称。因此，他们将额外的列添加到“分组依据”列表中，一切正常。但仔细想想，原因是新列根本没有更改组，因为每个客户ID始终具有相同的客户名称，这最终只是消除错误的一种简单方法。但在您的查询中，情况并非如此：在您关心的所有组中，您确实有多个日期

在我看来，最好使用像minCustomer Name这样的虚拟聚合作为CustomerName。记住，聚合函数的目的是将多个值折叠为单个值。必要时，某些系统会随机选取一个值，而不会向您发出警告。许多MySQL和Sybase开发人员在依赖这种奇怪的行为和/或从未真正了解它应该如何工作时，都被这种行为所激怒

还要记住，通常情况下，组是一组多行折叠成一行的集合。countdistinct要工作，需要在单个组中查看多个日期。但这与将输出保持为单独行的需要相冲突

实际上，行本身并不能提供足够的信息来决定是否保留它。我通过使用第二个查询找出符合条件的采购订单编号列表，然后通过内部联接将其用作过滤器，从而解决了这个问题

---

在第二个示例中，我使用了一个窗口函数，它允许您查看每一行的外部，而不会出现GROUPBY的行折叠行为。这两种方法基本上都能让您完成having的目标。

您能提供一些示例数据吗？在更改之前查询是什么样子的？您将它们添加到group by中，这显然会改变行为。我将它们添加到group by中，因为我使用了having子句-我觉得这是强制性的。您通过拆分它们使组变小，从而使匹配的组变少。除此之外，在对列进行分组时，一个列中不能有多个不同值的组。这是一个组的定义。如果不想更改联接，我可以在与数据一起工作时提供示例查询。谢谢。两个答案都很好——我很好奇你是否知道为什么它不起作用——这是我的主要问题之一。感谢您的帮助，我需要更多地开始使用CTE@用户3496218添加了解释

WITH POsToReturn AS (
SELECT S.PO_NUMBER   
FROM   PDX_SAP_USER..VW_PO_SIZE S 
JOIN   PDX_SAP_USER..VW_PO_ITEM I 
ON     I.PO_NUMBER = S.PO_NUMBER 
WHERE  I.PO_BALANCE_QUANTITY > 0
GROUP BY S.PO_NUMBER
HAVING COUNT(DISTINCT S.PO_REQ_DELIV_DATE) > 1
AND COUNT(CASE WHEN I.DEL_INDICATOR = 'L' THEN 1 END) = 0
)
SELECT <your columns>
FROM   POsToReturn P
JOIN   PDX_SAP_USER..VW_PO_SIZE S
ON     S.PO_NUMBER = P.PO_NUMBER
...    <join the rest of the tables for the detail columns>
--     leave out the entire group by!

with data as (
    select
        count(distinct S.PO_REQ_DELIV_DATE)
            over (partition by S.PO_NUMBER) as rdd_count
        <insert rest of main query>
)
select ... from data
where rdd_count > 1
order by S.PO_NUMBER;