Question

我并不确切地知道该怎么称呼这个问题，所以如果标题令人困惑，请道歉。我正在尝试生成特定网站的用户活动摘要。此查询返回每种页面的总点击次数：

select
    count(case when internal_handle = 'content' then 1 else null end) as CONTENT,
    count(case when data = '/webapps/assessment/take/launch.jsp' then 1 else null end) as ASSESSMENTS,
    count(case when internal_handle = 'discussion_board_entry' then 1 else null end) as DISCUSSIONS,
    count(case when data = '/webapps/blackboard/execute/uploadAssignment' then 1 else null end) as BB_ASSIGNMENTS,
    count(case when data = '/webapps/turn-plgnhndl-BBLEARN/links/submit.jsp' then 1 else null end) as TII_ASSIGNMENTS,
    count(case when data = '/webapps/osv-kaltura-BBLEARN/jsp/courseGallery.jsp' then 1 else null end) as COURSE_GALLERY,
    count(case when data = '/webapps/osc-BasicLTI-BBLEARN/frame.jsp' then 1 else null end) as ECHO_360,
    count(case when internal_handle = 'check_grade' then 1 else null end) as MY_GRADES
from BBLEARN.ACTIVITY_ACCUMULATOR
where course_pk1 = (select pk1 from BBLEARN.course_main where course_id = '2014FA.BOS.PPB.445.A')
and user_pk1 in (select users_pk1 from BBLEARN.course_users where role = 'S' and crsmain_pk1 = course_pk1);

结果如下：

CONTENT,ASSESSMENTS,DISCUSSIONS,BB_ASSIGNMENTS,TII_ASSIGNMENTS,COURSE_GALLERY,ECHO_360,MY_GRADES
5787,954,335,0,0,0,837,222

但我的目标是将每个用户的点击次数分开。例如，我想要一个像：

这样的结果

USER_PK1,CONTENT,ASSESSMENTS,DISCUSSIONS,BB_ASSIGNMENTS,TII_ASSIGNMENTS,COURSE_GALLERY,ECHO_360,MY_GRADES
USER_A,250,79,41,0,0,0,66,7
USER_B,144,89,82,0,0,0,24,0
USER_C,174,45,23,0,0,0,58,1
--etcetera

我可以想象迭代地运行上面的查询，但我对Oracle的熟悉程度不够高。我该怎么做呢？或者有更好的方法来获取我正在寻找的领域吗？

提前致谢！

Answer 1

只需添加group by：

select user_pk1,
       count(case when internal_handle = 'content' then 1 else null end) as CONTENT,
       count(case when data = '/webapps/assessment/take/launch.jsp' then 1 else null end) as ASSESSMENTS,
       count(case when internal_handle = 'discussion_board_entry' then 1 else null end) as DISCUSSIONS,
       count(case when data = '/webapps/blackboard/execute/uploadAssignment' then 1 else null end) as BB_ASSIGNMENTS,
       count(case when data = '/webapps/turn-plgnhndl-BBLEARN/links/submit.jsp' then 1 else null end) as TII_ASSIGNMENTS,
       count(case when data = '/webapps/osv-kaltura-BBLEARN/jsp/courseGallery.jsp' then 1 else null end) as COURSE_GALLERY,
       count(case when data = '/webapps/osc-BasicLTI-BBLEARN/frame.jsp' then 1 else null end) as ECHO_360,
       count(case when internal_handle = 'check_grade' then 1 else null end) as MY_GRADES
from BBLEARN.ACTIVITY_ACCUMULATOR
where course_pk1 = (select pk1 from BBLEARN.course_main where course_id = '2014FA.BOS.PPB.445.A') and
      user_pk1 in (select users_pk1 from BBLEARN.course_users where role = 'S' and crsmain_pk1 = course_pk1)
group by user_pk1;

如果user_pk1不是“user”的意思，那么您可能需要加入另一个表。

通过外部字段分离多个计数（*）的方法

1 个答案: