>From: Jim Lyons [mailto:jlyons4435@stripped]
>Sent: Friday, May 28, 2010 11:49 AM
>To: Andre Matos
>Subject: Re: Using RAND to get a unique ID that has not been used yet
>If your specs are that specific (IDs must be between 1 and 999999)
>then you could create a 999999-row table with one integer column and
>prefill it with the numbers 1 to 999999 in random order.
>Then you could write a function that would select and return the first
>number in the table, then delete that record so you would not reuse
>Once you've done the work of sorting 999999 numbers in random order
>(which can be done anywhich way) it's easy and you don't have to loop
>an indeterminant number of times. You would be looping an increasing
>number of times as you begin to fill up the table.
[JS] You don't have to go to the trouble of sorting the "number" table in any
order, random or anything else. Just select a random record from that table.
Since you'll have the number of that record, you can delete it.
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