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-   -   Check this query please (https://vborg.vbsupport.ru/showthread.php?t=68447)

Logikos 08-17-2004 05:51 PM
Check this query please
 
PHP Code:
        $info = $DB_site->query("
                SELECT
                        thread.threadid as threadid,thread.title as title,thread.forumid as forumid,
                        thread.postusername as postusername,thread.postuserid as postuserid,thread.dateline as dateline,
                        thread.views as views,thread.replycount as replycount,forum.title as forumtitle
                FROM thread AS thread
                WHERE forumid IN($id)
                ORDER BY threadid DESC
        "); 
That query is basicly taking alot of info from the table thread. I wanted to grab the forum name from the database. Seeing the thread table don't have the title of forums just ids. I tried getting it from the forum table in the same query. I just added a "forum.title as forumtitle" But i get an sql error

mysql error: Unknown table 'forum' in field list

Any ideas how to grab info from to tables in the same query? Thanks a bunch

Colin F 08-17-2004 06:27 PM
Try a JOIN:

PHP Code:
$info = $DB_site->query(" 
                SELECT 
                        thread.threadid as threadid,thread.title as title,thread.forumid as forumid, 
                        thread.postusername as postusername,thread.postuserid as postuserid,thread.dateline as dateline, 
                        thread.views as views,thread.replycount as replycount,forum.title as forumtitle 
                FROM thread AS thread
LEFT JOIN " . TABLE_PREFIX . "forum AS forum ON (forum.forumid = thread.forumid)
                WHERE forumid IN($id) 
                ORDER BY threadid DESC 
");

Logikos 08-17-2004 06:45 PM
Ya i tried the LEFT JOIN " . TABLE_PREFIX . "forum AS forum ON (forum.forumid = thread.forumid)

But i kept getting a mysql error: Column: 'forumid' in where clause is ambiguous

Modin 08-17-2004 10:25 PM
Just need to specify where the forumid field is from. So this will work.
[SQL]
$info = $DB_site->query("
SELECT
thread.threadid as threadid,thread.title as title, thread.forumid as forumid,
thread.postusername as postusername,thread.postuserid as postuserid,thread.dateline as dateline,
thread.views as views,thread.replycount as replycount,forum.title as forumtitle
FROM thread AS thread
LEFT JOIN " . TABLE_PREFIX . "forum AS forum ON (forum.forumid = thread.forumid)
WHERE forum.forumid IN($id)
ORDER BY threadid DESC
[/SQL]

However, if this script has access to $forumcache you don't need to select the forum title from the table, and therefore no need for a join.

such as...
PHP Code:
$info = $DB_site->query("
                SELECT
                        thread.threadid as threadid,thread.title as title, thread.forumid as forumid,
                        thread.postusername as postusername,thread.postuserid as postuserid,thread.dateline as dateline,
                        thread.views as views,thread.replycount as replycount,
                FROM thread AS thread
                WHERE thread.forumid IN($id)
                ORDER BY threadid DESC"); 

while($item = $DB_site->fetch_array($info))
{
    $item['forumtitle'] = $forumcache["$item[forumid]"]['title'];
    //rest of your code
} 
Both will have the same results, but the second would be quicker because there's no join. (this is of course if the script has access to $forumcache)

Logikos 08-18-2004 03:44 AM
Ok this is what i placed

PHP Code:
        $info = $DB_site->query("
                SELECT
                        thread.threadid,thread.title,thread.forumid,thread.postusername,thread.postuserid,
                        thread.dateline,thread.views,thread.replycount,forum.title as forumtitle
                FROM thread AS thread
                LEFT JOIN " . TABLE_PREFIX . "forum AS forum ON (forum.forumid = thread.forumid)
                WHERE forumid IN($id)
                ORDER BY threadid DESC
        "); 
And i get this

Quote:
mysql error: Column: 'forumid' in where clause is ambiguous

mysql error number: 1052
Fixed it. Had to chage the WHERE statement to
PHP Code:
WHERE thread.forumid IN($id) 


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