From: Andrew Dolgov <noreply@madoka.volgo-balt.ru>
Date: Wed, 15 Jul 2015 10:29:03 +0000 (+0300)
Subject: purge_orphans: optimize the query, maybe
X-Git-Tag: 16.3~217
X-Git-Url: https://git.wh0rd.org/?a=commitdiff_plain;h=7680d44ef21d3a8eec3e564516b348e0feb87e28;p=tt-rss.git

purge_orphans: optimize the query, maybe
https://tt-rss.org/forum/viewtopic.php?f=1&t=3417&p=20408#p20407
---

diff --git a/include/functions.php b/include/functions.php
index 22179e1a..e5f2ca48 100644
--- a/include/functions.php
+++ b/include/functions.php
@@ -320,7 +320,7 @@
 
 		// purge orphaned posts in main content table
 		$result = db_query("DELETE FROM ttrss_entries WHERE
-			(SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
+			NOT EXISTS (SELECT ref_id FROM ttrss_user_entries WHERE ref_id = id)");
 
 		if ($do_output) {
 			$rows = db_affected_rows($result);