Improve update_feedbrowser_cache SQL query

diff --git a/include/rssfuncs.php b/include/rssfuncs.php
index 1f38091b6126dc64c84d1aa7dfd37e4f75bb0ea0..e26fc38beb9851d9c1897f6406f673234c34499a 100644 (file)
--- a/include/rssfuncs.php
+++ b/include/rssfuncs.php
@@ -23,9 +23,8 @@
        function update_feedbrowser_cache() {
 
                $result = db_query("SELECT feed_url, site_url, title, COUNT(id) AS subscribers
-                       FROM ttrss_feeds WHERE (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
-                               WHERE tf.feed_url = ttrss_feeds.feed_url
-                               AND (private IS true OR auth_login != '' OR auth_pass != '' OR feed_url LIKE '%:%@%/%'))
+                       FROM ttrss_feeds WHERE feed_url NOT IN (SELECT feed_url FROM ttrss_feeds
+                               WHERE private IS true OR auth_login != '' OR auth_pass != '' OR feed_url LIKE '%:%@%/%')
                                GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT 1000");
 
                db_query("BEGIN");