From a92b2fdcabdd88bc4b229031220f69b633bd5e67 Mon Sep 17 00:00:00 2001
From: shish <shish@7f39781d-f577-437e-ae19-be835c7a54ca>
Date: Wed, 4 Jul 2007 00:56:02 +0000
Subject: [PATCH] optimise a very common (99%) case

git-svn-id: file:///home/shish/svn/shimmie2/trunk@210 7f39781d-f577-437e-ae19-be835c7a54ca
---
 core/database.class.php | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/core/database.class.php b/core/database.class.php
index 315b4489..d04a81ee 100644
--- a/core/database.class.php
+++ b/core/database.class.php
@@ -151,6 +151,11 @@ class Database {
 		if($positive_tag_count + $negative_tag_count == 0) {
 			$query = new Querylet($this->get_images);
 		}
+		else if($positive_tag_count == 1 && $negative_tag_count == 0) {
+			$query = new Querylet(
+				"{$this->get_images} WHERE images.id IN (SELECT image_id FROM tags WHERE tag = ?) ",
+				$tag_search->variables);
+		}
 		else {
 			$s_tag_array = array_map("sql_escape", $tag_search->variables);
 			$s_tag_list = join(', ', $s_tag_array);