- AND NOT `contact`.`id` IN (SELECT `author-id` FROM `post-user`)
- AND NOT `contact`.`id` IN (SELECT `owner-id` FROM `post-user`)
- AND NOT `contact`.`id` IN (SELECT `causer-id` FROM `post-user` WHERE `causer-id` IS NOT NULL)
- AND NOT `contact`.`id` IN (SELECT `cid` FROM `post-tag`)
- AND NOT `contact`.`id` IN (SELECT `contact-id` FROM `post-user`);";
+ AND NOT `contact`.`id` IN (SELECT `author-id` FROM `post-user` WHERE `author-id` = `contact`.`id`)
+ AND NOT `contact`.`id` IN (SELECT `owner-id` FROM `post-user` WHERE `owner-id` = `contact`.`id`)
+ AND NOT `contact`.`id` IN (SELECT `causer-id` FROM `post-user` WHERE `causer-id` IS NOT NULL AND `causer-id` = `contact`.`id`)
+ AND NOT `contact`.`id` IN (SELECT `cid` FROM `post-tag` WHERE `cid` = `contact`.`id`)
+ AND NOT `contact`.`id` IN (SELECT `contact-id` FROM `post-user` WHERE `contact-id` = `contact`.`id`);";