mysql - Illegal mix of collations for operation 'match' -

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i've got query 

select txt, unix_timestamp(added), uid, id2, id2_type    sitelog    match (id2, uid, txt) against (? in boolean mode)

that return error:

illegal mix of collations (latin1_swedish_ci,numeric), (latin1_swedish_ci,numeric), (utf8_unicode_ci,implicit) operation 'match'

my query:

create table if not exists `sitelog` (   `id` int(10) unsigned not null auto_increment,   `added` datetime not null,   `txt` text collate utf8_unicode_ci not null,   `uid` int(11) not null,   `id2` int(11) not null,   `id2_type` char(1) collate utf8_unicode_ci not null,   primary key (`id`),   key `uid` (`uid`),   key `id2` (`id2`) ) engine=myisam  default charset=utf8 collate=utf8_unicode_ci;

mysql: 5.5.35+dfsg-0+wheezy1 how 1 fix this?


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