DECODE in the WHERE part of the query ?

Hello guys ,I am on 10gR2, and as always , the following mystery for me will be funny for you : ), so please share your knowledge.
I have one select on v$session , and i would to use something like DECODE function in the WHERE part of the query,
but , for the values i enter through the variables.
Currently i have something like :
WHERE status =upper('&session_status') AND username IS NOT NULL order by last_call_et desc;and that works fine, i enter either 'active' or 'inactive' and i get results.
But i would like to enter for example '1' for active and '2' for inactive, so i could write as little as i can as i am lazy. : )
Do you have some idea ?

hi there
select * from v$session  where status = decode('&session_status',1,'ACTIVE','INACTIVE')  AND username IS NOT NULL order by last_call_et descregards
hitesh

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