sql - MySQL: Avoid filesort when using ORDER BY - 


    create table table1 ( `id` bigint(20) not null auto_increment, `kid` int(10) unsigned not null, `table_group` varchar(100) collate utf8_bin not null) engine=innodb;

i got index on following column;

primary key (`id`) key `index1` (`kid`,`table_group`);

the table has 5million rows matching clause; when explain on below query doing filesort , runtime limit take 10seconds high.

mysql> explain select * db1.table1 force index(index1) kid=187 , table_group in ('not_present', 'nothing', 'perror') order id limit 200\g *************************** 1. row ***************************            id: 1   select_type: simple         table: tabl1          type: range possible_keys: index1           key: index1       key_len: 306           ref: null          rows: 1052764         extra: using index condition; using filesort

i want avoid filesort; please help


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