Re: Multiple queries in PHP
| From: | Shawn McKenzie | Date: | Sun, 25 Jan 2009 21:07:32 +0000 |
| Subject: | Re: Multiple queries in PHP | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-287118@lists.php.net to get a copy of this message | ||
Ashley Sheridan wrote:
> Hi all,
>
> I've run into a bit of a problem. I put together a query using mysql
> variables in the form set @m:= 0; with the select that uses it directly
> after. For any wondering, the select was using it as an incremental
> value which can't be hard coded, as the value will depend on the
> ordering of the results of the query itself.
>
> The problem seems to be that while phpMyAdmin would execute this double
> query perfectly well, php using mysql_query() was having problems, as
> apparently it can't actually run multiple queries.
>
> Now the full query looks something like this:
>
>
> mysql_query("SELECT @m:=0;");
>
> $query = "SELECT * FROM(
> SELECT profiles.id, ROUND(AVG(rated.score)) AS
rating,
> COUNT(rated.score) AS total, @m:=@m+1 AS rank FROM
> rated LEFT JOIN
> profiles ON (profiles.id = rated.profile_id) GROUP BY
> rated.profile_id
> ORDER BY rating DESC, total DESC) AS ranking WHERE ranking.id=$id";
> $result = mysql_query($query);
>
>
> which seems to be working OK so far, but does anyone know of any
> potential pitfalls I might face when doing something like this?
>
> Thanks,
>
>
> Ash
> www.ashleysheridan.co.uk
>
Might try the mysqli extension. mysqli_multi_query()
--
Thanks!
-Shawn
http://www.spidean.com