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serial number and divide it over multiple database cols


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I have a question, but no real example yet. 

I wonder if someone can tell how to create a serial number that counts from 10000 to 100000 en divide it as a unique id over several databases and table.columns?

I dont want to have an example with uniqid() , but counting up with one.

I have no clue how to do this can someone please give any suggestion?


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I suppose you figure out the highest value, and add one.  Which part are you having problems with?  If you expect the database to do this automatically, it's not going to, it's up to you to look at all of the columns, figure out the highest value, and add one for the next one, and hope that you didn't create a race condition where someone else was using the site at the exact same time and happened to generate the same ID.

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