Oracle insert if not exists statement

Question

insert into OPT (email, campaign_id) values(\'mom@cox.net\',100)
where not exists( select * from OPT where (email =\"mom@cox.net\" and campaign_id =100)) ;
         


        

Answer 1

MERGE INTO OPT
USING
    (SELECT 1 "one" FROM dual) 
ON
    (OPT.email= 'mom@cox.net' and OPT.campaign_id= 100) 
WHEN NOT matched THEN
INSERT (email, campaign_id)
VALUES ('mom@cox.net',100) 
;