Sort of like this....
mysql> select id from tbbooks where id = 8;
Empty set (0.00 sec)

mysql> select id from tbbooks where id = 1;
+----+
| id |
+----+
|  1 |
+----+
1 row in set (0.00 sec)


On May 26, 2:44 pm, scausten <[email protected]> wrote:
> I'm adding files content to my database with the following code being
> called onvalidation when the form is submitted. It really simply
> generates a 6-digit alphanumeric code as an identifier for the file:
>
> codes = db().select(db.products.code)   # Grabs all the existing codes
> from the database
> while not form.vars.code:
>     code = "".join([random.sample(string.ascii_lowercase
> +string.digits, 1)[0] for i in range(6)])  # Creates a code
>     if not code in codes:  # If its unique...
>         form.vars.code = code   # ...add it into the form vars
>
> It works fine at the moment, but I'm hoping to have several hundred
> thousand files potentially, and I'm worried that the database call to
> pull all existing codes will become a serious bottleneck. The code
> needs to be random and not sequential.
>
> Does anyone have any ideas on how I can do this more elegantly?

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