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auto_increment in mySql

 
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Hi All,

is there any way to auto_increment backwards (-1, -2, -3) in mysql?
or to have an ID which increments like this:
J193
J194
J195
j196

etc?
 
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I don't think this is possible within MySQL, or any other DB that I know of. If you are using hibernate you could write your own id generator. Otherwise I think you would have to lock the table, query for the last id, then generate the next one all in your java code.
 
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