> Help! I did this query and it updated everything!
> update customer_order_history set customerID="123 456 789 0123" where
WHERE expects an integer (and will convert other types to an integer).
0 is false, null is null, everything else is true. Hence, "WHERE
invoiceid-12217" is true for every row where invoiceid is neither 12217
nor null. I expect you changed every row except the one you wanted.
> I typed a '-' rather than an '='.
> I haven't did a commit or a rollback saving point. Is there any other
> way To undo this update??
Restore from backup.