A Visual Explanation of SQL Joinshttp://softtime.ru/forumA Visual Explanation of SQL Joinshttp://softtime.ru/forum/read.php?id_forum=3&id_theme=72293#post425416Наглядно показано http://www.codinghorror.com/blog/2007/10/a-visual-explanation-of-sql-joins.htmlA Visual Explanation of SQL JoinsTue, 2 Mar 2010 23:04:48 +0300oliss