Yes you sure can,..
When you insert a row just use one of the older values that no longer exists
on the table.. Alternatively, you can insert a blank value, mysql will
automatically set it to the next value after the highest one in the table
and then you can update it to one of the older values.
First, what do you mean by regs?
If I understand your question, you want to know if mysql will re-use an old
auto_increment value that has been deleted. The answer is yes and no.
If you say: DELETE FROM mytable;
then the next insertion will cause the auto_increment value to begin at 1
If you
