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複数の結合を含むクエリがあります。私のクエリは、総歩数に基づいてリーダーボードの上位 10 人を返します。privacy列の値が に設定されているすべての行を除外したいと考えていますout。

現状の MySQL クエリ:

SELECT ga.owner_id, u.displayname, g.title, SUM(ga.steps) as `Total Steps`, u.user_id, g.group_id, pri.privacy FROM engine4_passport_goalactivitys ga
LEFT JOIN engine4_passport_goals goals ON goals.goal_id = ga.owner_id
LEFT JOIN engine4_passport_passports p ON p.passport_id = goals.owner_id
LEFT JOIN engine4_users u ON u.user_id = p.owner_id
LEFT JOIN engine4_passport_teams t ON t.owner_id = u.user_id
LEFT JOIN engine4_group_groups g ON g.group_id = t.group_id
LEFT JOIN engine4_passport_privacy pri on pri.user_id = u.user_id
GROUP BY u.user_id
ORDER BY `Total Steps` DESC
LIMIT 0,10

私が試してみました：

SELECT ga.owner_id, u.displayname, g.title, SUM(ga.steps) as `Total Steps`, u.user_id, g.group_id, pri.privacy FROM engine4_passport_goalactivitys ga
LEFT JOIN engine4_passport_goals goals ON goals.goal_id = ga.owner_id
LEFT JOIN engine4_passport_passports p ON p.passport_id = goals.owner_id
LEFT JOIN engine4_users u ON u.user_id = p.owner_id
LEFT JOIN engine4_passport_teams t ON t.owner_id = u.user_id
LEFT JOIN engine4_group_groups g ON g.group_id = t.group_id
LEFT JOIN engine4_passport_privacy pri on pri.user_id = u.user_id
AND pri.privacy <> 'out'
GROUP BY u.user_id
ORDER BY `Total Steps` DESC
LIMIT 0,10

上記の 2 つのクエリの違いは次の行です。

AND pri.privacy <> 'out'

ただし、プライバシーが「out」に設定されているユーザーを除外する代わりに、それらをクエリに含め、プライバシー値をnull

where代わりに試してみましandたが、0行しか返されません。

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2 に答える 2

0

AND の代わりに WHERE 句で使用してみてください

where pri.privacy <> 'out'
于 2012-08-15T10:17:43.350 に答える
0

解決済み -

SELECT ga.owner_id, u.displayname, g.title, SUM(ga.steps) as `Total Steps`, u.user_id, g.group_id, pri.privacy FROM engine4_passport_goalactivitys ga
LEFT JOIN engine4_passport_goals goals ON goals.goal_id = ga.owner_id
LEFT JOIN engine4_passport_passports p ON p.passport_id = goals.owner_id
LEFT JOIN engine4_users u ON u.user_id = p.owner_id
LEFT JOIN engine4_passport_teams t ON t.owner_id = u.user_id
LEFT JOIN engine4_group_groups g ON g.group_id = t.group_id
LEFT JOIN engine4_passport_privacy pri on pri.user_id = u.user_id
WHERE pri.privacy is null OR pri.privacy = 'in'
GROUP BY u.user_id
ORDER BY `Total Steps` DESC
LIMIT 0,10;
于 2012-08-15T10:39:25.100 に答える