auto_increment in MySQL - can I omit it?

I've noticed that PHPmyAdmin creates the following SQL for table creation:

CREATE TABLE something (
    ...
) auto_increment=1;

When I write a database creation script I don't use the auto_increment bit. From reading related questions here I understand that it determines the starting value for auto_increment value开发者_StackOverflow中文版s. But it is good practice to reset it to 1, or should I just leave it out of the SQL so that the default is used?

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You can leave it out.

The default should be 1, but you can specify that part of the script to use a different seed.

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It has no meaning, as long as you have unique id's. Don't worry about the value.