Generate encoding String according to creation order.
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by Tony
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Published on 2010-05-16T07:42:20Z
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2010/05/16
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I need to generate encoding String for each item I inserted into the database. for example:
x00001 for the first item
x00002 for the sencond item
x00003 for the third item
The way I chose to do this is counting the rows. Before I insert the third item, I count against the database, I know there're already 2 rows, so the next encoding is ended with 3. But there is a problem. If I delete the second item, the forth item will not be the x00004,but x00003.
I can add additional columns to table, to store the next encoding, I don't know if there's other better solutions ?
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