Query on special characters

Hi
How to find special characters(multi-byte) present in a column?
Pls suggest an query

Can you please try this -
select trim(translate(upper('A12~~"```'),'ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890',' '))
from dual;
{code}
Edited by: AChatterjee on Dec 29, 2011 10:14 PM                                                                                                                                                                                                                                                                                                                                                                                               

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      8  select 5 id, 'bbvxzckvbzxcv&^%#' name from dual union all
      9  select 6 id, 'ashgweqfg/gfjwgefj////' name from dual union all
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    14  select 11 id, 'cccc dddd-/mnm' name from dual
    15  )
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    21          , '.0123456789abcdefghijklmnopqrstuvwxyz'
    22          , '.'
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             7 sdsaf$([]:'
             8 <-fdsjgbdfsg
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