现在已经坚持了几个小时。现在，我正在尝试通过Submission_Id将HR1和HR2的值分组到同一行，但Oracle将返回两个单独的条目，完全相同的提交ID和Response_Type。它不是将所有的HR1和HR2值按Submission_Id和Response_type分组，而是返回两个单独的行;即使Submission_ID和Response_Type相同，也分别用于HR1和HR2。我做错了什么？
例如，我得到的是：
Submission_Id Posting_Type Response_Type Day_Of_Year GMT_Offset HR1 HR2
2460037 Daily UTC0 602014 5 08-03-18 13:02:17
2460037 Daily UTC0 602014 5 08-03-18 13:02:17
2460037 Daily UTC1 602014 5 08-03-18 13:02:17
2460037 Daily UTC1 602014 5 08-03-18 13:02:17
我想要得到的是：
Submission_Id Posting_Type Response_Type Day_Of_Year GMT_Offset HR1 HR2
2460037 Daily UTC0 602014 5 12-MAR-18 08-03-18 13:02:17 12-MAR-18 08-03-18 13:02:17
2460037 Daily UTC1 602014 5 12-MAR-18 08-03-18 13:02:17 12-MAR-18 08-03-18 13:02:17
我正在查询的问题如下：
select
s.submission_id
, CASE WHEN FL.FORM_LINE_ID = '2001'
THEN 'Same-Day'
WHEN FL.FORM_LINE_ID = '2002'
THEN 'Daily'
END Posting_Type
, ff.form_field_tx Response_Type
, v.data_date Day_Of_Year
, v.utc_offset GMT_Offset
, v.create_dt Posted_Date
, CASE WHEN FF.FORM_FIELD_TX IN ('UTC0', 'UTC1', 'UTC2', 'UTCD') and v.HR_NUM = 1
THEN to_char(v.HR, 'DD-MM-YY HH24:MI:SS')
WHEN FF.FORM_FIELD_TX IN ('Tutoring', 'Studying') and v.HR_NUM = 1
THEN Value_Tx
END HR1
, CASE WHEN FF.FORM_FIELD_TX IN ('UTC0', 'UTC1', 'UTC2', 'UTCD') and v.HR_NUM = 2
THEN to_char(v.HR, 'DD-MM-YY HH24:MI:SS')
WHEN FF.FORM_FIELD_TX IN ('Time Reading', 'Time Working Out') and v.HR_NUM = 2
THEN Value_Tx
END HR2
from submission s
inner join submission_value sv on s.submission_id = sv.submission_id
inner join value v on v.value_id = sv.value_id
inner join form_field ff on sv.form_field_id = ff.form_field_id
inner join form_line fl on ff.form_line_id = fl.form_line_id
group by s.submission_id, ff.form_field_tx, v.data_date , v.utc_offset, v.create_dt ;
样本数据如下：
Submission:
Submission_Id Submission_Dt Submission_Name Create_Dt
24600037 03-15-2018 20180315 11-MAR-18
Submission_Value
Submission_value_Id Submission_ID Value_ID Form_Field_Id
990 24600037 5550 777
991 24600037 5551 777
992 24600037 5552 777
993 24600037 5553 777
Form_Field
Form_Field_Id Form_Field_Tx Create_DT Form_Line_Id
1001 UTC0 15-MAR-18 2001
1002 UTC1 15-MAR-18 2001
Form_line
Form_Line_Id Form_Line_Tx
2001 Example1
2002 Example2
Value
Value_Id data_Date HR Value_Tx HR_num
Create Table Submission
(
Submission_Id varchar2(10)
, Submission_Dt date
, Submission_name varchar2(30)
, Create_dt date
);
insert into Submission (Submission_id, Submission_Dt, Submission_Name, Create_DT)
Values('24600037', '03-15-2018', '20180315', '11-MAR-18)';
Create Table Value
(
Value_Id number
, value_tx varchar2(50)
, hr_utc varchar2(10)
, utc_offset number
, data_date varchar2(10)
, hr datetime
, create_dt date
);
insert into value (Value_id, value_tx, hr_utc, utc_offset, data_date, hr, create_dt,)
values (5551, 'Test Value', 'UTC0', '4', '28-FEB-18 12.51.45.252000000 PM', sysdate);
insert into value (Value_id, value_tx, hr_utc, utc_offset, data_date, hr, create_dt,)
values (5552, 'Test Value', 'UTC1', '4', '28-FEB-18 12.51.45.252000000 PM', sysdate)
Create Table Submission_Value
(
Submission_value_Id Number
, Submission_id Number
, Value_Id Number
, Form_field_Id Number
);
insert into Submission_Value (Submission_Value_Id, Submission_Id, Value_Id, Form_Field_Id)
values('990', '24600037', '5550', '777');
insert into Submission_Value (Submission_Value_Id, Submission_Id, Value_Id, Form_Field_Id)
values('991', '24600037', '5551', '777');
insert into Submission_Value (Submission_Value_Id, Submission_Id, Value_Id, Form_Field_Id)
values('992', '24600037', '5552', '777');
insert into Submission_Value (Submission_Value_Id, Submission_Id, Value_Id, Form_Field_Id)
values('993', '24600037', '5553', '777');\
Create Table Form_Field
(
Form_Field_Id Number
, Form_Field_Tx Varchar2(200)
, Create_DT Date
, Form_Line_Id Number
)
insert into Form_Field (Form_Field_id, Form_Field_Tx, Create_Dt, Form_Line_ID)
values('1001', 'UTC0', '15-MAR-18', '2001');
insert into Form_Field (Form_Field_id, Form_Field_Tx, Create_Dt, Form_Line_ID)
values('1002', 'UTC0', '15-MAR-18', '2001');
Create Table Form_Line
(
Form_line_id Number
,Form_line_tx Varchar2(200)
)
insert into Form_Line (Form_Line_Id, Form_Line_Tx)
values('2001', 'Example1');
insert into Form_Line (Form_Line_Id, Form_Line_Tx)
values('2002', 'Example2');
答案 0 :(得分：0)
对列HR1和HR2使用MAX。这称为条件聚合。您正在使用不同条件从同一列 中选择。
MAX(CASE WHEN FF.FORM_FIELD_TX IN ('UTC0', 'UTC1', 'UTC2', 'UTCD') and v.HR_NUM = 1
THEN to_char(v.HR, 'DD-MM-YY HH24:MI:SS')
WHEN FF.FORM_FIELD_TX IN ('Tutoring', 'Studying') and v.HR_NUM = 1
THEN Value_Tx
END) AS HR1
,MAX(CASE WHEN FF.FORM_FIELD_TX IN ('UTC0', 'UTC1', 'UTC2', 'UTCD') and v.HR_NUM = 2
THEN to_char(v.HR, 'DD-MM-YY HH24:MI:SS')
WHEN FF.FORM_FIELD_TX IN ('Time Reading', 'Time Working Out') and v.HR_NUM = 2
THEN Value_Tx
END) AS HR2
答案 1 :(得分：0)
您应该按照要保留的值进行汇总。所以我想你想要：
select s.submission_id,
(CASE WHEN FL.FORM_LINE_ID = '2001' THEN 'Same-Day'
WHEN FL.FORM_LINE_ID = '2002' THEN 'Daily'
END) as Posting_Type,
ff.form_field_tx as Response_Type,
v.data_date as Day_Of_Year,
v.utc_offset as GMT_Offset,
MAX(CASE WHEN FF.FORM_FIELD_TX IN ('UTC0', 'UTC1', 'UTC2', 'UTCD') and v.HR_NUM = 1
THEN to_char(v.HR, 'DD-MM-YY HH24:MI:SS')
WHEN FF.FORM_FIELD_TX IN ('Tutoring', 'Studying') and v.HR_NUM = 1
THEN Value_Tx
END) as HR1,
MAX(CASE WHEN FF.FORM_FIELD_TX IN ('UTC0', 'UTC1', 'UTC2', 'UTCD') and v.HR_NUM = 2
THEN to_char(v.HR, 'DD-MM-YY HH24:MI:SS')
WHEN FF.FORM_FIELD_TX IN ('Time Reading', 'Time Working Out') and v.HR_NUM = 2
THEN Value_Tx
END) as HR2
from submission s join
submission_value sv
on s.submission_id = sv.submission_id
value v
on v.value_id = sv.value_id join
form_field ff
on sv.form_field_id = ff.form_field_id join
form_line fl
on ff.form_line_id = fl.form_line_id
group by s.submission_id,
(CASE WHEN FL.FORM_LINE_ID = '2001' THEN 'Same-Day'
WHEN FL.FORM_LINE_ID = '2002' THEN 'Daily'
END),
ff.form_field_tx,
v.data_date,
v.utc_offset;
GROUP BY也必须匹配未分散的列。这些定义了结果集中的每一行。