Код: Выделить всё
$res2 = mysql_query("SELECT * FROM `users_stat`,`users`, WHERE `u_id` = (select f.u_id from fu f where f.user_name = '$login') AND `u_name` = `us_username`");
_bin (binary) – бинарное сравнение;
_ci (case insensitive) – не чувствительное к регистру;
_cs (case sensitive) – чувствительное к регистру;
http://dev.mysql.com/doc/refman/5.0/en/charset-unicode-sets.html писал(а):For any Unicode character set, operations performed using the _general_ci collation are faster than those for the _unicode_ci collation. For example, comparisons for the utf8_general_ci collation are faster, but slightly less correct, than comparisons for utf8_unicode_ci. The reason for this is that utf8_unicode_ci supports mappings such as expansions; that is, when one character compares as equal to combinations of other characters. For example, in German and some other languages “ß” is equal to “ss”. utf8_unicode_ci also supports contractions and ignorable characters. utf8_general_ci is a legacy collation that does not support expansions, contractions, or ignorable characters. It can make only one-to-one comparisons between characters.