sql - insert if not exists

Question

I am having trouble with a sql query. I need to insert a row if the same row does not exist already. This is what I have so far:

DECLARE
BEGIN
   FOR FOLDE         


        

Answer 1

A better (Oracle specific?) solution may be the MERGE statement.

See here for a nice explanation, with examples:

http://www.oracle-base.com/articles/10g/MergeEnhancements10g.php

Hope that helps.