How to insert non-duplicated data on a database?

[eluser]João Ramos[/eluser]
Could you please be explain how to use that IGNORE keyword? Is it something I add to my active record query?

[quote author="Bhashkar" date="1328634518"]yes, it will be the best way to make your field unique. to avoid the MYSQL error you can use IGNORE keyword. this will continue the processing to next row.[/quote]