How to replace a "notfound" output with a null value?

hi,
I'm just getting a output of "Rows Notfound" for a script..
instead of this , i just need to show the output with a record as null value or some value..
do we have any option to use this in oracle..

Apart from capturing with an exception in PL/SQL code, if you're wanting something in a script as pure SQL, you'd have to generate an additional row and only select that where no data is found e.g...
SQL> ed
Wrote file afiedt.buf
1 select ename from emp where ename = 'FRED'
2 union all
3* select 'No Data' from dual where not exists (select * from emp where ename = 'FRED')
SQL> /
ENAME
No Data
SQL>Of course this does effectively double-up on the queries being executed, so if you're dealing with a heavily complex query, it may be best just just have the regular exception come out, but then this will also depend on your actual requirements and why you want to do this in the first place.

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