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go with Ashe's suggestion...

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git-svn-id: file:///svn/phpbb/trunk@4676 89ea8834-ac86-4346-8a33-228a782c2dd0
This commit is contained in:
Meik Sievertsen 2003-11-22 12:43:07 +00:00
parent 6016228752
commit 3cb634c796
1 changed files with 17 additions and 36 deletions
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53
phpBB/includes/functions_posting.php
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@ -137,44 +137,25 @@ function update_last_post_information($type, $id)
{ {
global $db; global $db;
switch ($type)
{
case 'forum':
// Splitted query - performance gain
$sql = 'SELECT MAX(post_time) AS max_post_time FROM ' . POSTS_TABLE . '
WHERE post_approved = 1
AND forum_id = ' . $id;
$result = $db->sql_query_limit($sql, 1);
$row = $db->sql_fetchrow($result);
$sql = 'SELECT p.post_id, p.poster_id, p.post_time, u.username, p.post_username
FROM ' . POSTS_TABLE . ' p, ' . USERS_TABLE . ' u
WHERE p.poster_id = u.user_id
AND p.post_time = ' . $row['max_post_time'];
break;
case 'topic':
$sql = 'SELECT p.post_id, p.poster_id, p.post_time, u.username, p.post_username
FROM ' . POSTS_TABLE . ' p, ' . USERS_TABLE . " u
WHERE p.post_approved = 1
AND p.poster_id = u.user_id
AND p.topic_id = $id
ORDER BY p.post_time DESC";
break;
default:
return array();
}
$result = $db->sql_query_limit($sql, 1);
$row = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
$update_sql = array(); $update_sql = array();
if ($row) $sql = 'SELECT MAX(post_id) as last_post_id
FROM ' . POSTS_TABLE . "
WHERE post_approved = 1
AND {$type}_id = $id";
$result = $db->sql_query($sql);
$row = $db->sql_fetchrow($result);
if (!empty($row['last_post_id']))
{ {
$sql = 'SELECT p.post_id, p.poster_id, p.post_time, u.username, p.post_username
FROM ' . POSTS_TABLE . ' p, ' . USERS_TABLE . ' u
WHERE p.poster_id = u.user_id
AND p.post_id = ' . $row['last_post_id'];
$result = $db->sql_query($sql);
$row = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
$update_sql[] = $type . '_last_post_id = ' . (int) $row['post_id']; $update_sql[] = $type . '_last_post_id = ' . (int) $row['post_id'];
$update_sql[] = $type . '_last_post_time = ' . (int) $row['post_time']; $update_sql[] = $type . '_last_post_time = ' . (int) $row['post_time'];
$update_sql[] = $type . '_last_poster_id = ' . (int) $row['poster_id']; $update_sql[] = $type . '_last_poster_id = ' . (int) $row['poster_id'];
@ -187,7 +168,7 @@ function update_last_post_information($type, $id)
$update_sql[] = 'forum_last_poster_id = 0'; $update_sql[] = 'forum_last_poster_id = 0';
$update_sql[] = "forum_last_poster_name = ''"; $update_sql[] = "forum_last_poster_name = ''";
} }
return $update_sql; return $update_sql;
} }