MyTable
ID | Name
1  | Fluffeh
2  | Bobby
3  | Tables

insert into myTable
    values (1, 'Fluffster');

insert into myTable
    values (1, 'Fluffster')
    on duplicate key update Name='Fluffster';

ALTER TABLE myTable
ADD UNIQUE INDEX (ID, `name`);

1. Insert into... on duplicate update
2. insert.. ignore