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-   -   SQL Problems (https://vborg.vbsupport.ru/showthread.php?t=26800)

merk 08-29-2001 09:45 AM
Lets hope someone can help me!

Basically, i am trying to select from the database, the top 10 most posts, with the most replies, which expire after 7 days regardless, ie, only posts before 7 days ago are shown, easy you might say? well i dont actually want it 7 days from the start of the THREAD, i want it 7 days from the LAST reply.

However, for the life of me, i cant think of a way to do it.

The code i tried->
Code:
$replycountquery = "SELECT thread.*, post.*";
$replycountquery .= " FROM thread,post";
$replycountquery .= " WHERE thread.threadid=post.threadid";
$replycountquery .= " AND threadid=$newsforums";
$replycountquery .= " AND post.dateline > " . $replycountexpire;
$replycountquery .= " GROUP BY thread.threadid";
$replycountquery .= " ORDER BY threadid.replycount DESC";
$replycountquery .= " LIMIT $newsitems";
$replycountexpire, is simply a mktime function that takes the current server timestamp and taking 7 days worth off.

code ive also tried in testing, this works, however has no date stuff, as no post table is introduced.

Code:
$replycountquery = "SELECT thread.*";
$replycountquery .= " FROM thread";
$replycountquery .= " WHERE forumid = $newsforums";
$replycountquery .= " ORDER BY thread.replycount DESC";
$replycountquery .= " LIMIT $newsitems";
Id really appreicate some help!

I just wish i had more SQL books! :(

Wayne Luke 08-29-2001 01:42 PM
Try:
Code:
SELECT thread.*, post.* FROM thread
    LEFT JOIN post ON (threadid)
  WHERE thread.threadid=post.threadid
    AND forumid=$newsforums
    AND post.dateline > $replycountexpire
  GROUP BY thread.threadid";
  ORDER BY threadid.replycount DESC LIMIT 0,$newsitems";
You had "AND threadid=$newsforums" which most likely resulted in no matches within the time specified.


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