我在mysql中有一个问题，我有一个字段ID，它是自动增量和其他一些字段

I have an issue in mysql that i have a field id which is auto increment and some other fields. where the id field should not be autoincremented while enterting the null values and should be autoincremented while entering values insert values in the same row while giving not null values .I have an issue in mysql that i have a field id