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    create or replace procedure inserttestdata
(
   v_count        in   number,
   v_startuserid  in   varchar2,
   v_returnval    out  number )
as
   v_opertime    ......
	
    
        
    
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SQL> select ascii('A') A,ascii('a') a,ascii('0') zero,ascii(' ') space from dual;
        A         A      ZERO     ......
	
    
        
    
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