- $qry = 'SELECT notice_tag.tag, '.
- 'sum(exp(-(now() - notice_tag.created)/%s)) as weight ' .
+ if (common_config('db', 'type') == 'pgsql') {
+ $weightexpr='sum(exp(-extract(epoch from (now() - notice_tag.created)) / %s))';
+ } else {
+ $weightexpr='sum(exp(-(now() - notice_tag.created) / %s))';
+ }
+
+ $qry = 'SELECT notice_tag.tag, '.
+ $weightexpr . ' as weight ' .