BULK SELECT EXECUTE IMMEDIATE

Question

I want to update 3 lakhs record in EXP__REQUEST_SK table
How to use bulk select "execute immedaite" in PLSQL
Update EXP__Request_sk set R_CUSTOMERNAME = cust_name where BFG_CUSTOMERID=cust_id;

Answer 1

Note: this code is not tested.
create or replace procedure generic_update (
  tab_name  varchar2,             -- table to update
  field_to_update  varchar2,     -- column to update
  field_value  varchar2,             -- new column value
  id_field_name  varchar2,        -- id column name
  id_value number)                 -- id value to identify the record
as
  --local variables section
  stmt varchar2(4000) := '';
begin
  stmt := 'update ' || tab_name || ' set ' || field_to_update || ' = :f_value where '
             || id_field_name || ' = :i_value';
  savepoint txn1;
  execute immediate stmt using field_value, id_value;
  execute immediate ('commit');
  dbms_output.put_line('Update is done.');
exception
   when others then
      rollback to txn1;
      dbms_output.put_line('Update has been rolled back.');
end;
/Even though I provided this, static SQL is always faster than PL/SQL because there is no context switch.
An alternative to the above is to write all static SQLs into a script and run it.
However, if you don't know which tables and column to update before hand, and the update depends on user inputs (e.g. from a JSP), then Java can call a stored procedure to perform the update.
Edited by: pl/sql novice on Nov 20, 2008 11:24 PM