#1062 - Duplicate entry '0' for key 'PRIMARY'

[eluser]kaloyan[/eluser]
I'm trying to make a database using phpMyAdmin
I'm using XAMPP 3.2.1 and CI 2.1.4
Apace and MySQL are started in XAMPP

so column "id" is set to Primary (not Null)
and column "title" is set to --- (not Null)

then when click on Go on the one that's cheched with Ignore (as the Video Tutorial shows), I get this error: "#1062 - Duplicate entry '0' for key 'PRIMARY'"


SQL query: Edit Edit

INSERT INTO `ci_series`.`test` (

`id` ,
`title`
)
VALUES (
'', 'Some Title'
)
MySQL said: Documentation

#1062 - Duplicate entry '0' for key 'PRIMARY'

Please tell me how to fix it, thank You!