Question

我目前有以下查询，这给了我8位员工的重复条目。例如：

EMPLOYEE    FIRST_NAME  LAST_NAME   PL_1    PL_2    PL_3    PL_4    PL_5    PL_6 DUAL_EMPLOYEE  Dual_Process_Level_Comparison   process_level_compare
15723   BARBARA         FERREIRA                        LSBCW   LSBCR   NULL    NULL    NULL    NULL        NULL     
15723   BARBARA         FERREIRA                        LSBCW   NULL    NULL    NULL    NULL    NULL        NULL

芭芭拉应该只有1条记录，并且看起来应该像这样：

15723   BARBARA         FERREIRA                        LSBCW   LSBCR   NULL    NULL    NULL    NULL        NULL

我注意到a.process group by语句似乎有问题。

   select 
              a.EMPLOYEE, 
              m.FIRST_NAME, 
              m.LAST_NAME, 
              m.PROCESS_LEVEL as PL_1, 
              max(case when a.POS_LEVEL = 2 then a.process end) as PL_2, 
              max(case when a.POS_LEVEL = 3 then a.process end) as PL_3, 
              max(case when a.POS_LEVEL = 4 then a.process end) as PL_4, 
              max(case when a.POS_LEVEL = 5 then a.process end) as PL_5, 
              max(case when a.POS_LEVEL = 6 then a.process end) as PL_6, 
              case when s.[DUAL EMPLOYEE] = 'UNASSIGNED' then ' ' else s.[DUAL EMPLOYEE] end as DUAL_EMPLOYEE, 
              case when a.process = s.[DUAL EMPLOYEE] then 'REVIEW' end as Dual_Process_Level_Comparison, 

              case 
                when a.process in ('test') then 1 
                when a.process in ('test2', 'test3') then 2 
                   when a.process in ('test4', 'test5', 'test6') then 3 
                   when a.process in ('test7', 'test', 'LSBCW', 'LTBC', 'LTBH', 'LTBV', 'LTCLR', 'LTCS', 'LTHC', 'LTMON', 'LTSBC') then 4 
                   when a.process in ('hi') then 5 
                   when a.process in ('kkkkk') then 6 
                   when a.process in ('aaaa') then 7 
                   when a.process in ('ttttt') then 8 
                   when a.process in ('oooo') then 9 
                   when a.process in ('aaaaaa') then 10 
                   when a.process in ('testest', 'def', 'ghi') then 11 
              end as Supplemental_Compare_Number
            from 
              dbo.vw_PAEMPPOS a 
              join dbo.COMPLETE_EMPLOYEE_MASTER m on m.EMPLOYEE = a.EMPLOYEE 
              join dbo.HR_EMPUSERFIELDS s on s.EMPLOYEE = m.EMPLOYEE 

            where END_DATE = '2099-12-31 00:00:00.000' 
              and EMP_STATUS NOT IN ('1A', 'RT', 'SZ', 'T1', 'XD', 'XV', 'ZZ') 
            group by 
              a.EMPLOYEE, 
              m.LAST_NAME, 
              m.FIRST_NAME, 
              m.PROCESS_LEVEL, 
              s.[DUAL EMPLOYEE],
              a.process

我发现问题出在a.process分组依据，这给了我额外的员工价值。无论如何，我是否可以通过运行组中的a.process来使查询运行？ dbo.vw_PROD.process在选择列表中无效，因为它没有包含在聚合函数中，或者GROUP BY子句是我收到的错误。

Answer 1

如果每个员工只需要一行，那么您的GROUP BY子句应为：

group by a.EMPLOYEE

期间。没有其他列，除非您知道每个员工只有一个值。因此，名称可能没问题。

在其余的列上使用适当的聚合列。您可以使用MIN()和MAX()（两者之一）作为名称。

按条款分组导致重复记录

1 个答案: