Executing PL/SQL from a varchar2 variable

so i've got an instruction ie:
test in varchar2;
test <= TO_DATE('2009-08-27', 'YYYY-MM-DD') ;
how to execute "test" from inside a stored function/procedure?
thanks i'm kind of noob, any help would be appreciated :)

¿Not sure here whether you've edited your original question, as Toon uses := instead of <=?
Anyway:
so i've got an instruction ie:
test in varchar2;
test <= TO_DATE('2009-08-27', 'YYYY-MM-DD') ;
how to execute "test" from inside a stored function/procedure?
thanks i'm kind of noob, any help would be appreciated :)So, I'm assuming your 'instruction' in human language would be something like:
"Check if your in-parameter is older or equal to the current present day (a.k.a. SYSDATE)"
But, WHY you need a stored function/procedure you do not mention.
So, please read this to begin with, to get the most and maximum out of your questions:
http://tkyte.blogspot.com/2005/06/how-to-ask-questions.html
And if my assumption is right, you could do something like:
MHO%xe> create or replace function date_in_future
2 (p_date_str in varchar2)
3 return varchar2
4 as
5    rtn varchar2(1);
6 begin
7    case when to_date(p_date_str, 'yyyy-mm-dd') > trunc(sysdate)
8         then rtn := 'Y';
9         else rtn := 'N';
10    end case;
11    --
12    return rtn;
13    --
14 end date_in_future;
15 /
Functie is aangemaakt.
Verstreken: 00:00:00.25
MHO%xe> select date_in_future('2008-02-12') from dual;
DATE_IN_FUTURE('2008-02-12')
N
Verstreken: 00:00:00.07
MHO%xe> select date_in_future('2020-02-12') from dual;
DATE_IN_FUTURE('2020-02-12')
YBut perhaps a BOOLEAN return or whatever would suit your requirement better.
But then you'd need to provide a more complete and concisive case/requirement/question.
Please remember these sites as well in any way, besides OTN, they contain tons of useful stuff (that's an understatement ;) ):
http://tahiti.oracle.com
http://asktom.oracle.com

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RESEARCH
========
Test the issue for different DB version and different characterset.
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===================================
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and
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lo_start VARCHAR2 (100) DEFAULT 'Toronto'; -- a PL/SQL varchar2 variable
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