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Request #39228 PDO: implement randomRow method
Submitted: 2006-10-22 14:51 UTC Modified: 2006-10-22 15:01 UTC
From: selecter at gmail dot com Assigned:
Status: Not a bug Package: Feature/Change Request
PHP Version: * OS: *
Private report: No CVE-ID: None
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 [2006-10-22 14:51 UTC] selecter at gmail dot com 
Description:
------------
We need a unified method which will get a random row from a table.

Please note that at least in MySQL:
SELECT * FROM tablename ORDER BY rand();
is too slow on big tables.

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 [2006-10-22 14:57 UTC] helly@php.net 
Sorry, but your problem does not imply a bug in PHP itself.  For a
list of more appropriate places to ask for help using PHP, please
visit http://www.php.net/support.php as this bug system is not the
appropriate forum for asking support questions.  Due to the volume
of reports we can not explain in detail here why your report is not
a bug.  The support channels will be able to provide an explanation
for you.

Thank you for your interest in PHP.

You can do that in PHP. However there is no way a random order can be fast. Nothing PHP, the RDBMS or any other software can do here. I guess the best option is to use a shuffle algorithm  on top of the query result.
 [2006-10-22 15:00 UTC] selecter at gmail dot com 
It's a feature request for PDO, not a question about how to implement.
 [2006-10-22 15:01 UTC] selecter at gmail dot com 
ok I get it
 
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