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Some improvements in efficiency of Recent Activity.

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There is now a new field in forum_discussions which has the userid
of the author in it.  This saves a lookup every time to forum_posts.

There is also some caching and rearrangement of the logic.

It seems to work OK, I'm about to do some speed tests on moodle.org
This commit is contained in:
moodler 2004-01-14 11:50:29 +00:00
parent da8079852c
commit d05956ac9f
8 changed files with 80 additions and 19 deletions
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14
mod/forum/db/postgres7.php
View file

@ -27,11 +27,23 @@ function forum_upgrade($oldversion) {
table_column("forum", "", "assesspublic", "integer", "4", "unsigned", "0", "", "assessed");
}
if ($oldversion < 2004011404) {
table_column("forum_discussions", "", "userid", "integer", "10", "unsigned", "0", "", "firstpost");
if ($discussions = get_records_sql("SELECT d.id, p.userid
FROM {$CFG->prefix}forum_discussions as d,
{$CFG->prefix}forum_posts as p
WHERE d.firstpost = p.id")) {
foreach ($discussions as $discussion) {
update_record("forum_discussions", $discussion);
}
}
}
return true;
}
?>