Suddenly, someone adds a numbers of customers with already specified customer numbers, overriding the auto_increment value.
I'm going to add another wrinkle to this (why you do not want simultaneous autoincremented and externally supplied numbers).
You will run into one of two problems:
It is generally a bad idea (from the DBA's standpoint) to mix internal and external sources for an incremented key. Your best bet (if an external customer number is absolutely necessary) is to utilize it as a lookup field for processing but use an autoincrement field (in your primary table) for tying secondary tables together.

In reply to Re: Mysql autoincrement problem by proceng
in thread Mysql autoincrement problem by DreamT

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