Index: temp/trunk/html/admin/contents/csv_sql.php
===================================================================
--- temp/trunk/html/admin/contents/csv_sql.php	(revision 4865)
+++ temp/trunk/html/admin/contents/csv_sql.php	(revision 4866)
@@ -232,5 +232,5 @@
 	*/
 	$sql = "";
-	$sql .= " SELECT column_name, description FROM dtb_table_comment WHERE table_name = ? AND column_name NOT IS NULL";
+	$sql .= " SELECT column_name, description FROM dtb_table_comment WHERE table_name = ? AND column_name IS NOT NULL";
 	$arrRet = $objQuery->getAll($sql, array($selectTable));