Emulate nvl2() ?

I have a procedure that uses the nvl2() function of ORACLE 8.15 that I need to create in a 8.0.5 database. Is it possible to emulate the nvl2() function somewhoe differently? (e.g. via nvl() or decode() ?)

Something like this what you are wanting?
SQL> variable v_test varchar2
SQL> select decode(:v_test, null, 'null', 'not null') result from dual;
RESULT
null
1 row selected.
SQL> exec :v_test := 'a';
PL/SQL procedure successfully completed.
select decode(:v_test, null, 'null', 'not null') result from dual;
RESULT
not null
1 row selected.
SQL>You could wrap that in a function or procedure to do what you want I think...
- Mark

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create a query that displays employees lastname and commission amounts.if an employee does not earn commission,put "no commission."label column comm
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Hi,
This looks an awful lot like homework.
If you're really stuck, post your best attempt so far, and a description of what you think is wrong with it.
The assignment itself, "Decode or nvl2 or case" gives you three different ways to do this.
CASE is a lot more useful in general, so I suggest learning how to use it first.
NVL2 is a little more concise for this particular problem.
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You'll probably need to use the TO_CHAR function, to convert the commission to a string, so that whatever kind of expression you use (CASE or NVL2 or DECODE) it will always return the same datatype: VARCHAR2.
All built-in functions are documented in the SQL Language manual:
http://download.oracle.com/docs/cd/B28359_01/server.111/b28286/index.htm
Actually, CASE and DECODE are not functions, but they're described in the same manual,.

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Emulate nvl2() ?

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