Re: Querying a database for 50 users' information: 50 queries or a WHERE array?

From: Date: Tue, 13 Sep 2011 14:32:52 +0000
Subject: Re: Querying a database for 50 users' information: 50 queries or a WHERE array?
References: 1  Groups: php.general 
Request: Send a blank email to php-general+get-314792@lists.php.net to get a copy of this message
Yes there is but all the IDs in one string like this $ids = $id1.', '.$id2.', ' ; note : remove the last comma from the string the make the query like this: mysql_query("SELECT * FROM table WHERE userID= in($ids ) } On Tue, Sep 13, 2011 at 7:24 AM, Dotan Cohen <dotancohen@gmail.com> wrote: > I have a MySQL database table with about 10,000 rows. If I want to > query for 50 specific users (so no LIMIT ORDER BY) then I seem to have > these choices: > > 1) SELECT * FROM table > This will pull in all 10,000 rows, not nice! > > 2) foreach ($user as $u) { mysql_query("SELECT * FROM table WHERE > userID=".$u); } > This will lead to 50 queries, again not nice! (maybe worse) > > 3) foreach ($user as $u) { $whereClause+=" OR userID=".$u; } > This makes a huge SQL query. However, this is the method that I'm using > now. > > Is there some sort of array that can be passed in the WHERE clause, > containing all the userID's that I am interested in? > > Thanks! > > -- > Dotan Cohen > > http://gibberish.co.il > http://what-is-what.com > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > >

« previous php.general (#314792) next »