vb.org Archive - MySQL query help please

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Darth Cow

01-02-2003 07:38 PM

MySQL query help please

Here is my current MySQL query...

SELECT SUM(hitscount) AS totalhits FROM hits WHERE time>123456789 AND siteid=10 GROUP BY siteid

This query works great most of the time, but sometimes there won't be any result rows that match the criteria. How would I make totalhits be equal to 0 if there are no results returned instead of a mysql resource result with no rows? Thanks for you help :).

Xenon

01-02-2003 07:51 PM

this part here is useless if it's the full query:

AND siteid=10 GROUP BY siteid

just remove the group by and i think it should work...

Darth Cow

01-02-2003 11:45 PM

I realized that I was needlessly added in the SUM() part that was already taken care of by the grouping, so it was repetative. The solution I can up with on my own (using mysql_num_rows()) isn't nearly as elegant as merely removing the group by part and using intval() on the result. Thanks for you help :).

TECK	01-03-2003 12:24 AM

Quote:

Originally posted by Darth Cow
Here is my current MySQL query...

SELECT SUM(hitscount) AS totalhits FROM hits WHERE time>123456789 AND siteid=10 GROUP BY siteid

This query works great most of the time, but sometimes there won't be any result rows that match the criteria. How would I make totalhits be equal to 0 if there are no results returned instead of a mysql resource result with no rows? Thanks for you help :).

PHP Code:


		
			
$count['hits'] = 0;

if ( $docount = $DB_site->query_first("

  SELECT COUNT(*) AS totalhits

  FROM hits

  WHERE dateline>$bbuserinfo[lastvisit] AND siteid=10

") and !empty( $docount['totalhits'] ) )

{

  $count['hits'] = number_format( $docount['totalhits'] );

}

Logik

01-03-2003 12:32 AM

I think i see a typo in that..

Logik

01-03-2003 12:33 AM

PHP Code:


		
			
$count['hits'] = 0;

if ( $docount = $DB_site->query_first)"

  SELECT COUNT(*) AS totalhits

  FROM hits

  WHERE dateline>$bbuserinfo[lastvisit] AND siteid=10

") and !empty( $docount['totalhits'] ) )

{

  $count['hits'] = number_format( $docount['totalhits'] );

}

You had the ')' turned the wrong way.. I could be wrong.. :paranoid:

TECK	01-03-2003 12:35 AM

The code above will give you a very nice error. My code is correct.

Logik

01-03-2003 12:41 AM

Yes. Indeed. A VERY nice error.. Hey, cant hate me cause im trying ;)

TECK	01-03-2003 12:47 AM

That's how we all learn, by doing mistakes. :)
Cheers.

Logik

01-03-2003 01:45 AM

hehe... :OI I just seen that '(' and was thinking.. 'whoa dont it have to be the other way?'.. But i was wrong :(

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