pure example to compare the performance of reading for a local variable, a declarant and a queue element (looking for)

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    9  /
  
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  SQL> select * from mytab;
  
  A                    B                    C
  -------------------- -------------------- --------------------
  qwureer              iftsdfsuif           123134
  

  Max
  [My Italian blog Oracle | http://oracleitalia.wordpress.com/2010/01/17/supporto-di-xml-schema-in-oracle-xmldb/]