Re: newbie: mysql statement
| From: | Richard Lynch | Date: | Tue, 16 Jul 2002 04:53:53 +0000 |
| Subject: | Re: newbie: mysql statement | ||
| Groups: | php.general | ||
| Request: | Send a blank email to php-general+get-107799@lists.php.net to get a copy of this message | ||
>I want to update the most recent record (based on the timestamp in field
>posted) where the parent field == a specified value (in a table called
>header).
>
>I tried the following mysql statement:
>
>"UPDATE header WHERE parent = '$this->postid' ORDER by posted SET
>parent='$this->parent' LIMIT1";
>
>but apparently you can't use ORDER in an UPDATE statement. If I take order
>out, the statement works. That being true (and please correct me if its
>not) how can I ensure that the newest record is the one being acted upon?
Perhaps:
where posted = max(posted)
assuming no *TWO* are ever posted within the same second, which is a very
dangerous assumption for a busy site...
Can't you just pass in the ID of the actual header you want changed, instead
of only its parent?
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