How can i select data from unknown table

My Drear:
for example scott scema
I would like to write statment like this
declare
xx number;
tab_name :='emp';
select empno into xx from tab_name;
end;
how cai I do it
Regards

You could easily find examples either in the online-help on using google.
http://fdegrelle.over-blog.com/article-11899896.html

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    HTH -- Mark D Powell --

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