How to force MySQL to take 0 as a valid auto-increment value

From the answer I got here:

You can use:

SET [GLOBAL|SESSION] sql_mode='NO_AUTO_VALUE_ON_ZERO'

Which as described here, will prevent MySQL from interpreting an INSERT/UPDATE ID of 0 as being the next sequence ID. Such behaviour will be limited to NULL.

It is what I'd consider pretty bad behaviour from the application though. You'll have to be real careful that it's used consistently, especially if you choose to implement replication at a later date.

Check your sql DB mode with:

SELECT @@[GLOBAL|SESSION].sql_mode;

If it's empty or not set, use:

SET [GLOBAL|SESSION] sql_mode='NO_AUTO_VALUE_ON_ZERO'

BE CAREFUL! If you use GLOBAL, it's not an immediate change, you need to restart your connection to apply the setting.

So, if you're restoring data from one DB to another, for example, and you're not sure if this setting is applied, use SESSION for an immediate change (it resets when closing the connection). When done, insert 0 value and it won't change even if the sql_mode is changed.

To reset this mode (and others) use

SET [GLOBAL|SESSION] sql_mode=''

Zero auto-increment values are not recommended because they're not set as default in MySQL databases.

For more info check mysql dev page topic on this

Update

For MariaDB use the command pointed out in this comment

SET sql_mode='NO_AUTO_VALUE_ON_ZERO'

If you do not want to deal with mysql variables, here's a useful hack:

INSERT INTO `{{TABLE_PREFIX}}users` VALUES (-1, '', '', '', 0, 0, 0, '', '', 0, 0, 0, 0, 0, NULL, '', '', '', NULL);

And then

UPDATE `{{TABLE_PREFIX}}users` SET id = 0 where id = -1;

Obviously, this assumes that you're using a signed integer and not using negative values for your table ids.