Here's an excerpt from your create_record routine (slightly reformatted):

while( $unique eq 'false' ) {
   $unique = 'true'; 
   $currentStatecode = rand( 99999999999 );
   $currentStatecode = floor( $currentStatecode );

   my $sqlQuery = "SELECT ID 
                   FROM IMAGEHOARD_MetaData 
                   WHERE ID = $currentStatecode";    

   my $query = $dbh->prepare( $sqlQuery );
   $query->execute() || die $dbh->errstr;

   if( $duplicateStatecode = $query->fetchrow_array() )
   {
      $unique = 'false';
   }
}

[download]

In english that would be

  1. Generate a random number
  2. See if that number exists in the database
  3. If so, go to step 1
There are simpler methods. :-)

One popular method is to use some sort of auto-increment field in the database. And if your database isn't driving the generation of the numbers, another method is to keep around a file that has the next unique number in it and each time it's used, increment the number and write it back to the file.

duff

In reply to Re: Binary File Handles and Scalars by duff
in thread Binary File Handles and Scalars by Angel

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