Question

I have an oracle table such as this.

I want to get a custom unique id in the format Mon-YY/unique number in the select statement

The result would look like(see the column UNIQUEORDERID)

Is it possible to achieve the result in select statement?
Please help me write the query.

Thanks,
Sajad

Answer 1

Try this –

SELECT REQUEST_ID,
       NAME_OF_TRAINING,
       APPLIED_DATE,
       to_char(APPLIED_DATE,'MON-YY') || '/' || ROW_NUMBER over (partition by to_char(APPLIED_DATE,'MON-YY') order by to_char(APPLIED_DATE,'MON-YY')) AS UNIQUEORDERID
FROM tablename;