From: tmo-github <github@yuit.net>
Date: Thu, 27 Nov 2014 19:04:24 +0000 (+0100)
Subject: Modify query to avoid a full table scan on MySQL
X-Git-Tag: 1.15~7^2^2
X-Git-Url: https://git.wh0rd.org/?p=tt-rss.git;a=commitdiff_plain;h=8458a312aecb64d651c28a14ea4a0f50cf1a58ec

Modify query to avoid a full table scan on MySQL
---

diff --git a/include/functions2.php b/include/functions2.php
index 866c92ec..29594076 100644
--- a/include/functions2.php
+++ b/include/functions2.php
@@ -1975,8 +1975,8 @@
 	}
 
 	function getLastArticleId() {
-		$result = db_query("SELECT MAX(ref_id) AS id FROM ttrss_user_entries
-			WHERE owner_uid = " . $_SESSION["uid"]);
+		$result = db_query("SELECT ref_id AS id FROM ttrss_user_entries
+			WHERE owner_uid = " . $_SESSION["uid"] . " ORDER BY ref_id DESC LIMIT 1");
 
 		if (db_num_rows($result) == 1) {
 			return db_fetch_result($result, 0, "id");