OpenBB SQL

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Got error 28 from storage engine
Query:
SELECT posts.guest as isguest, profiles.yahoo as yahoo, profiles.icq as icq, profiles.aim as aim, profiles.msn as msn, profiles.homepage as homepage, profiles.id as userid, profiles.usergroup as usergroup, profiles.avatar as avatar, profiles.sig as sig, profiles.location as location, profiles.posts as posts, posts.id as id, posts.ip as ip, posts.parseurl as parseurl, posts.dsmiley as dsmiley, posts.poster as poster, posts.message as message, posts.title as title, posts.dateline as dateline, posts.lastupdate as lastupdate, posts.lastupdateby as lastupdateby FROM posts, profiles WHERE posts.poster = profiles.username AND posts.threadid = '733' ORDER BY posts.id LIMIT 0,35