Im trying to create a link within a report

Question

select se.SERVER_ID,
se.SERVER_NAME,
se.MODEL_NUMBER,
se.SERVER_FUNCTION,
se.OPERATING_SYSTEM,
se.PROCESSORS,
se.RAM,
(select case when server_name in 'ni-cr-dev-dbs1'
        then '<a href="Link'
when server_name in name_of_document
        then '<a href="Link' ||
name_of_document ||' " target="_window">download</a>'
        end doc_link
        from se_SERVERS) as download,
se.FILENAME,
se.MIMETYPE,
se.LAST_UPDATE_DATE
from SE_SERVERS se
{code}
im getting an error, don't no if the inner select is being done right...
ORA-01427: single-row subquery returns more than one row                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           

Answer 1

Hi
You need to link to the primary key of your main table like...
select se.SERVER_ID,
se.SERVER_NAME,
se.MODEL_NUMBER,
se.SERVER_FUNCTION,
se.OPERATING_SYSTEM,
se.PROCESSORS,
se.RAM,
(select case when server_name in 'ni-cr-dev-dbs1'
        then '<a href="Link'
when server_name in name_of_document
        then '<a href="Link' ||
name_of_document ||' " target="_window">download</a>'
        end doc_link
        from se_SERVERS se2
        where se.primary_key = se2.primary_key) as download,
se.FILENAME,
se.MIMETYPE,
se.LAST_UPDATE_DATE
from SE_SERVERS se
{code}
Replacing primary_key with the primary key column. HOWEVER, in this case you don't need to, you can just have...
{code}
select se.SERVER_ID,
se.SERVER_NAME,
se.MODEL_NUMBER,
se.SERVER_FUNCTION,
se.OPERATING_SYSTEM,
se.PROCESSORS,
se.RAM,
  case when server_name in 'ni-cr-dev-dbs1'
        then '<a href="Link'
when server_name in name_of_document
        then '<a href="Link' ||
name_of_document ||' " target="_window">download</a>'
        end   download,
se.FILENAME,
se.MIMETYPE,
se.LAST_UPDATE_DATE
from SE_SERVERS seCheers
Ben