SQL Statements simplified and some bugfixing

asset.php

@@ -55,20 +55,18 @@
 		
 		// build query
 		$query = "SELECT
-				asset.asset_id AS asset_id,
-				IF(LENGTH(asset.asset_name)>0, asset.asset_name, '...') AS asset_name,
-				asset.asset_info AS asset_info,
-				assetclass.assetclass_id AS assetclass_id,
-				assetclass.assetclass_name AS assetclass_name
+				a.asset_id,
+				IF(LENGTH(a.asset_name)>0, a.asset_name, '...') AS asset_name,
+				a.asset_info,
+				c.assetclass_id,
+				c.assetclass_name
 			FROM
-				asset,
-				assetclass
+				asset AS a LEFT OUTER JOIN assetclass AS c USING (assetclass_id)
 			WHERE
-				SUBSTRING(asset.asset_name,1,1) = '" . $asset_letter . "'
-				AND assetclass.assetclass_id=asset.assetclass_id
+				SUBSTRING(a.asset_name,1,1) = '" . $asset_letter . "'
 			ORDER BY
-				asset.asset_name";
-		
+				a.asset_name";
+
 		// run query
 		$assets = $db->db_select($query);