Posted by J.O. Aho on 11/20/06 21:15

JM wrote:
> For a unique id we don't want to use an auto_increment, but want to
> construct a unique id incorporating a sequence (combination of letters
> and a number) to make it more meaningful and to distinguish between
> different projects and servers (alternative would be to create primary
> key on more than one field). Using Google and the PEAR manual I found
> the create sequence statement for MySQL. The create sequence statement
> is mentioned on dev.mysql.com but not in the MySQL manual.
> How come ? Is it dangerous to use it ? Prone to errors ? Bad programming
> style ?
> Or did they forget to mention it ?

Speculations from my side: it can generate non unique sequences, which would
require you to make some error checking and if the sequence already used, then
generate a new one and retry.


//Aho

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