I have a report in my web app to display the first 4 changes in value
field in table. So basically, it will display the first 4 values in value
column.
Currently, I created sql script and this will display the log level, auditable_id, value.
Current Query Result:
log_level | auditable_id | value |
---|---|---|
1 | 1 | 2 |
1 | 2 | 3 |
2 | 2 | 4 |
3 | 2 | 5 |
4 | 2 | 6 |
This should be the output:
auditable_id | log_level_1 | log_level_2 | log_level_3 | log_level_4 |
---|---|---|---|---|
1 | 2 | |||
2 | 3 | 4 | 5 | 6 |
Please see the attached screenshot.
Check this:
select
auditable_id,
max(case when log_level =1 then value end ) as log_level_1,
max(case when log_level =2 then value end ) as log_level_2,
max(case when log_level =3 then value end ) as log_level_3,
max(case when log_level =4 then value end ) as log_level_4
from tbl group by auditable_id;
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.