mySQL auto increment problem: Duplicate entry '4294967295' for key 1

Question

I have a table of emails.

The last record in there for an auto increment id is 3780, which is a legit record. Any new record I now insert is being inserted right there.

Answer 1

This usually happens when you accidentally insert a new record a provide the auto_increment value.

Most of the time that's because you have a column with a similar name and you make a typo that leads to the auto_increment value updated with the one you provided, which is 4294967295 if you provided a string instead of an int.

To solve this:

• delete the record whose PK value is 4294967295,
• check what was the max increment value by running

select max(autoincrementColumNameHere) from tableNameHere

• update your AUTO_INCREMENT value by running

 ALTER TABLE tableNameHere AUTO_INCREMENT = (maxValue+1)