vb.org Archive - Can I combine these 2 queries into 1?

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- - Can I combine these 2 queries into 1? (https://vborg.vbsupport.ru/showthread.php?t=41635)

Erwin

07-28-2002 06:49 PM

Can I combine these 2 queries into 1?

Thanks for helping in advance.

PHP Code:


		
			


$top=$DB_site->query_first("SELECT userid,field10 FROM userfield WHERE userid!=0 ORDER BY field10 desc LIMIT 5");



$topname=$DB_site->query_first("SELECT username,userid FROM user WHERE userid=$top[userid]");

I tried to use the JOIN command, but I keep ending up making loops. Thanks for helping again.

Erwin

07-28-2002 09:48 PM

Also, the other problem is that both tables have the same variable name 'userid' which gives me an 'ambiguous variable' mysql error.

Xenon

07-28-2002 10:00 PM

try that one (not sure i'm not so good in mysql^^)

PHP Code:


		
			
$top=$DB_site->query("SELECT DISTINCT user.username, user.userid, userfield.field10 FROM userfield LEFT JOIN user ON (user.userid=userfield.userid) WHERE NOT userfield.userid=0 ORDER BY userfield.field10 desc LIMIT 5);

Erwin

07-29-2002 12:22 AM

Thanks... how would you display the result?

$top[user.userid] ? That gives a parse error
$top[user.username]??

Admin

07-29-2002 05:39 AM

PHP Code:


		
			
$top = $DB_site->query_first('

    SELECT user.userid, username, field10

    FROM user

    LEFT JOIN userfield USING (userid)

    ORDER BY field10 DESC

');

Then use $top[userid] for user ID, $top[username] for username, and $top[field10] for the value of field 10.

(Just so you know, the original code had LIMIT 5 but I removed that since we are using query_first() anyway. If you want to get the top 5, you'll need some different code. But the code above does exactly the same thing your original code did.)

Erwin

07-29-2002 11:29 PM

Firefly, you are a king.

That worked like a charm. I was able to do a Top 5 using an array. Thanks. Your tip is going to help me in more ways than one.

Admin

07-30-2002 06:03 AM

Glad I could help. :)

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