DB2 Trigger: only update current row

I've created following trigger :

CREATE TRIGGER probeer2
  AFTER INSERT ON libtn01leb.kofax_release
  FOR EACH ROW
  UPDATE libtn01leb.kofax_release SET RRNR='bleh'

This trigger will update EVERY ROW in the table, instead of the row I'm currently adding.
How can I make it only be valid for the row I'm inserting ?

Your UPDATE statement is wrong. It is updating all the records in the table because it doesn't have any WHERE clause. If you want to update only the current row, you need to use the updated/inserted records (like in Jack's example: REFERENCING NEW AS N_ROW and use it as filter).

StackExchange Database Administrators Q#2556, answer score: 5