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タイトルが示すように、これを書き直して除外を結合のみにする方法は何ですか?

select users.id from users where id not in ("select
pu.owner_id from projects p
inner join
projects_users pu on
pu.owned_project_id = p.id
where p.project_name = 'This is an example of a project'")

これでうまくいくかもしれないと思ったのですが、project_users に存在しないユーザーからは何も返されません:

select u.id from users u
        left outer join projects_users pu on
        pu.owner_id = u.id
        inner join projects p on
        pu.owned_project_id = p.id          
        where NOT p.project_name = 'This is an example of a project'
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1 に答える 1

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SELECT    a.id
FROM      users a
LEFT JOIN project_users b ON a.id = b.owner_id
LEFT JOIN projects c ON b.owned_project_id = c.id AND 
          c.project_name = 'This is an example of a project'
WHERE     c.id IS NULL
于 2012-07-19T10:28:47.910 に答える