From 2f045fd94430524b0c97bede74e68f718efbe978 Mon Sep 17 00:00:00 2001
From: Shish <shish@shishnet.org>
Date: Tue, 28 Jul 2009 01:19:40 +0100
Subject: [PATCH] mysql fails at count() = 0

---
 ext/admin/main.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/ext/admin/main.php b/ext/admin/main.php
index 600c9b8d..552d72d2 100644
--- a/ext/admin/main.php
+++ b/ext/admin/main.php
@@ -94,7 +94,12 @@ class AdminPage implements Extension {
 
 	private function recount_tag_use() {
 		global $database;
-		$database->Execute("UPDATE tags SET count=(SELECT COUNT(image_id) FROM image_tags WHERE tag_id=tags.id GROUP BY tag_id)");
+		$database->Execute("
+			UPDATE tags
+			SET count = COALESCE(
+				SELECT COUNT(image_id) FROM image_tags WHERE tag_id=tags.id GROUP BY tag_id,
+				0
+			)");
 	}
 
 	private function purge_unused_tags() {