How does MySQL Auto Increment work?

Question

I was just creating a new table using MySQL Query Browser, and noticed there\'s a tick under Auto Increment Column. How does that work?

When adding to the database p

Answer 1

Yes. Auto_Increment columns work like they say on the tin. Tips

• when INSERT - ing, use NULL or omit the column

• Use LAST_INSERT_ID() (or API equivalents) to obtain the last generated value.

• for security and business logic reasons, it's usually better form to not directly use a key value for a customer identifier. Consider using Hashed / randomised surrogate customer keys instead.

Ta