vb.org Archive - Attachments per forum

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- Modification Requests/Questions (Unpaid) (https://vborg.vbsupport.ru/forumdisplay.php?f=112)

- - Attachments per forum (https://vborg.vbsupport.ru/showthread.php?t=52839)

Boofo

05-12-2003 06:44 AM

Attachments per forum

Can anyone please tell what I am doing wrong or missing in this query? I am trying to get the attachments count per forum and right now it shows the same count and bytes in every forum. Here is the code:

PHP Code:


		
			
/** Count of Attachments Per Forum and Bytes **/

$attachs=$DB_site->query_first("SELECT forum.title AS forum, COUNT(attachment.attachmentid) AS count, SUM(LENGTH(attachment.filedata)) AS bytes

FROM attachment,post,thread,forum

WHERE attachment.attachmentid = post.attachmentid 

AND post.threadid=thread.threadid 

AND forum.forumid=thread.forumid

GROUP BY thread.forumid 

ORDER BY count DESC");



$attachs['count'] = number_format($attachs['count']);

$attachs['bytes'] = number_format($attachs['bytes']);

/** Count of Attachments Per Forum and Bytes **/

Chris M

05-12-2003 12:52 PM

I think your query is wrong...

I'm not sure if it is right, but try:

Code:

$attachs=$DB_site->query_first("SELECT forum.title AS forum, COUNT(attachment.attachmentid) AS count, SUM(LENGTH(attachment.filedata)) AS bytes

FROM attachment

LEFT JOIN post ON post.attachmentid=attachment.attachmentid,

LEFT JOIN thread ON thread.threadid=post.threadid,

LEFT JOIN forum ON forum.forumid=thread.forumid,

WHERE attachment.attachmentid = post.attachmentid 

AND post.threadid=thread.threadid 

AND forum.forumid=thread.forumid

GROUP BY thread.forumid 

ORDER BY count DESC");

:)

Satan

Boofo

05-12-2003 01:08 PM

After taking the commas out after the LEFT JOINs (gave db error), I get the same results that I was getting with the other code. It shows 51 attachments, which is what I have in one forum. It shows that one very forum.

Boofo

05-13-2003 03:16 PM

Ok, we've narrowed it down to this:

SELECT SUM(attach) AS count FROM thread WHERE attach > 0 AND forumid=$forumid

Can anyone please tell me how to get the total filezise in both bytes and KB from this query?

filburt1

05-13-2003 03:17 PM

Looking into now.

Boofo

05-13-2003 03:18 PM

That was quick. Thank you, sir. ;)

filburt1

05-13-2003 03:26 PM

I got it; however it takes 3.10 sec to execute. If you're going to use it I strongly suggest you make it cache itself daily or so.
[sql]
SELECT COUNT(p.postid), SUM(LENGTH(a.filedata)), f.title
FROM post p, thread t, forum f, attachment a
WHERE a.attachmentid = p.attachmentid AND t.threadid = p.threadid
AND f.forumid = t.forumid AND p.attachmentid > 0
GROUP BY f.forumid;
[/sql]
I'm sure it can be done with JOINs, too, but I don't know how.

filburt1

05-13-2003 03:27 PM

BTW it's the SUM(LENGTH()) that's taking the most time. The query returns the number of posts with attachments, the cumulative filesize of all of those attachments, and the title of each forum, grouped by each forum.

Boofo

05-13-2003 03:36 PM

Using this shows the same attachments amount and file size in every forum. ;)

filburt1

05-13-2003 03:48 PM

Didn't for me (MySQL 4.0.12). It returned distinct forum titles and the other stats for them

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