Oracle Equivalent to MySQL INSERT IGNORE?

Question

I need to update a query so that it checks that a duplicate entry does not exist before insertion. In MySQL I can just use INSERT IGNORE so that if a duplicate record is fo

Answer 1

This one isn't mine, but came in really handy when using sqlloader:

1. create a view that points to your table:

   CREATE OR REPLACE VIEW test_view
   AS SELECT * FROM test_tab
   

2. create the trigger:

   CREATE OR REPLACE TRIGGER test_trig
    INSTEAD OF INSERT ON test_view
    FOR EACH ROW
     BEGIN
      INSERT INTO test_tab VALUES
       (:NEW.id, :NEW.name);
     EXCEPTION
      WHEN DUP_VAL_ON_INDEX THEN NULL;
     END test_trig;
   

3. and in the ctl file, insert into the view instead:

   OPTIONS(ERRORS=0)
   LOAD DATA
   INFILE 'file_with_duplicates.csv'
   INTO TABLE test_view
   FIELDS TERMINATED BY ','
   (id, field1)