Question on the PL/SQL and substitution of variables

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  Seems to me that you are wrong assuming that the binding can be done by name and no position when you use immediate enforcement.

  Example:

  SQL> create table foo_tab( c1 varchar2(10), n1 number );
  
  Table created.
  
  SQL>
  SQL> begin
    2          for i in 1..10
    3          loop
    4                  execute immediate 'insert into foo_tab values( to_char(:1), :1 )' using i;
    5          end loop;
    6          commit;
    7  end;
    8  /
  begin
  *
  ERROR at line 1:
  ORA-01008: not all variables bound
  ORA-06512: at line 4
  
  SQL>
  SQL>
  SQL> begin
    2          for i in 1..10
    3          loop
    4                  execute immediate 'insert into foo_tab values( to_char(:1), :1 )' using i,i;
    5          end loop;
    6          commit;
    7  end;
    8  /
  
  PL/SQL procedure successfully completed.
  
  SQL>
  

  As you can see, 1 PL/SQL block attempts to re - use bind variable: 1 new - and only link once.

  Fact does not work like that - you must link it again. Binding is done by bind - 1 position = 1 to the help of var, 2nd = 2nd bind using var, etc.. Name of the connection variable used is irrelevant and not unique.

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