SIngle row output for a multiple values

Question

Create table test_table ( metric_name varchar2(30), dt date, value number) ;
insert into test_table values ('METRIC_1', to_date('12/31/2013 08:00:00','mm/dd/yyyy hh24:mi:ss'), 10) ;
insert into test_table values ('METRIC_1', to_date('12/31/2013 08:00:00','mm/dd/yyyy hh24:mi:ss'), 20) ;
insert into test_table values ('METRIC_1', to_date('12/31/2013 08:00:00','mm/dd/yyyy hh24:mi:ss'), 30) ;
insert into test_table values ('METRIC_2', to_date('12/31/2013 08:00:00','mm/dd/yyyy hh24:mi:ss'), 11) ;
insert into test_table values ('METRIC_2', to_date('12/31/2013 08:00:00','mm/dd/yyyy hh24:mi:ss'), 22) ;
insert into test_table values ('METRIC_2', to_date('12/31/2013 08:00:00','mm/dd/yyyy hh24:mi:ss'), 33) ;
commit;
alter session set nls_date_format='mm/dd/yyyy hh24:mi:ss' ;
SQL> select * from test_table ;
METRIC_NAME                    DT                       VALUE
METRIC_1                       12/31/2013 08:00:00         10
METRIC_1                       12/31/2013 09:00:00         20
METRIC_1                       12/31/2013 10:00:00         30
METRIC_2                       12/31/2013 08:00:00         11
METRIC_2                       12/31/2013 09:00:00         22
METRIC_2                       12/31/2013 10:00:00         33
But I need output in following format:
METRIC_NAME   12/31/2013 08:00:00        12/31/2013 09:00:00        12/31/2013 10:00:00       
METRIC_1                   10                                     20                                  30
METRIC_2                    11                                    22                                  33
-Thanks

Answer 1

Hi,
943750 wrote:
Create table test_table ( metric_name varchar2(30), dt date, value number) ;
insert into test_table values ('METRIC_1', to_date('12/31/2013 08:00:00','mm/dd/yyyy hh24:mi:ss'), 10) ;
insert into test_table values ('METRIC_1', to_date('12/31/2013 08:00:00','mm/dd/yyyy hh24:mi:ss'), 20) ;
insert into test_table values ('METRIC_1', to_date('12/31/2013 08:00:00','mm/dd/yyyy hh24:mi:ss'), 30) ;
insert into test_table values ('METRIC_2', to_date('12/31/2013 08:00:00','mm/dd/yyyy hh24:mi:ss'), 11) ;
insert into test_table values ('METRIC_2', to_date('12/31/2013 08:00:00','mm/dd/yyyy hh24:mi:ss'), 22) ;
insert into test_table values ('METRIC_2', to_date('12/31/2013 08:00:00','mm/dd/yyyy hh24:mi:ss'), 33) ;
commit;
alter session set nls_date_format='mm/dd/yyyy hh24:mi:ss' ;
SQL> select * from test_table ;
METRIC_NAME                    DT                       VALUE
METRIC_1                       12/31/2013 08:00:00         10
METRIC_1                       12/31/2013 09:00:00         20
METRIC_1                       12/31/2013 10:00:00         30
METRIC_2                       12/31/2013 08:00:00         11
METRIC_2                       12/31/2013 09:00:00         22
METRIC_2                       12/31/2013 10:00:00         33
But I need output in following format:
METRIC_NAME   12/31/2013 08:00:00        12/31/2013 09:00:00        12/31/2013 10:00:00   
METRIC_1                   10                                     20                                  30
METRIC_2                    11                                    22                                  33
-Thanks
All the dts INSERTed were 08:00:00; why are some displayed as 09:00:00 or 10:00:00?  I assume there are typos in the INSERT statements, and the results above are correct.
Taking data from 1 column on N rows, and displaying it as N columns on 1 row is called Pivoting.  Search for "pivot" for details.
If you know the exact dts for which you want to check, you can do something like this:
SELECT    *
FROM      test_table
PIVOT     (    MIN (value)
          FOR  dt  IN ( TO_DATE ('12/31/2013 08:00:00', 'mm/dd/yyyy hh24:mi:ss')  AS hr_08
                      , TO_DATE ('12/31/2013 09:00:00', 'mm/dd/yyyy hh24:mi:ss')  AS hr_09
                      , TO_DATE ('12/31/2013 10:00:00', 'mm/dd/yyyy hh24:mi:ss')  AS hr_10                  )
ORDER BY  metric_name
I hope this answers your question.
If not, post  a little sample data (CREATE TABLE and INSERT statements, relevant columns only) for all tables involved, and also post the results you want from that data.
Point out where the query above is giving the wrong results, and explain, using specific examples, how you get the correct results from the given data in those places.  If you changed the query at all, post your code.
Always say which version of Oracle you're using (e.g., 11.2.0.2.0).
See the forum FAQ: https://forums.oracle.com/message/9362002