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SQL> with tt as
  2  (
  3  select 'haha' string from dual union
  4  select '123' from dual union
  5  select 'haha12' from dual union
  6  select 'haha[]' from dual union
  7  select '12@@' from dual union
  8  select 'ah@!123' from dual
  9  )
 10  select string
 11  from
 12  (
 13  select string,translate(
 14  string,'abcdefghijklmnopqrstuvwxyz0987654321',
 15  rpad('#',26,'#')||rpad('*',10,'*')
 16  )
 17  translated from tt
 18  )
 19  where instr(translated,'#') > 0
 20  and instr(translated,'*') > 0;
STRING
-------
ah@!123
haha12
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See Also
CTXSYS
CTXSYS
The Oracle Text account
Oracle Text Reference
DBSNMP
DBSNMP
The account used by the Management Agent component of Oracle Enterprise Manager to monitor and manage the database
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