Performance between using statement and string concatenation for dynamic sql

    
SQL>
SQL> create or replace procedure DO_WORK(x number) is
  2   y number;
  3   begin
  4       y := x;
  5   end;
  6  /

Procedure created.

SQL> set timing on
SQL>
SQL> begin
  2       for i in 1 .. 100 loop
  3           execute immediate 'begin do_work(:x); end;' using i;
  4       end loop;
  5   end;
  6  /

PL/SQL procedure successfully completed.

Elapsed: 00:00:00.03
SQL>
SQL> begin
  2       for i in 1 .. 100 loop
  3           execute immediate 'begin do_work('||i||'); end;';
  4       end loop;
  5   end;
  6  /

PL/SQL procedure successfully completed.

Elapsed: 00:00:00.17

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Performance between using statement and string concatenation for dynamic sql : Execute Immediate « PL SQL « Oracle PL / SQL

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