查看有多少
SELECT u.user_id, u.username, u.user_active, ug.group_id
FROM `phpbb_users` u, `phpbb_user_group` ug, `phpbb_groups` g
WHERE u.user_id = ug.user_id
AND ug.group_id = g.group_id
AND u.user_id != -1
AND u.user_active =0
AND u.user_session_time =0
刪除
DELETE `phpbb_users` u, `phpbb_user_group` ug, `phpbb_groups` g
FROM `phpbb_users` u, `phpbb_user_group` ug, `phpbb_groups` g
WHERE u.user_id = ug.user_id
AND ug.group_id = g.group_id
AND u.user_id != -1
AND u.user_active =0
AND u.user_session_time =0
看結果
SELECT u.user_id, u.username, u.user_active, ug.group_id, g.group_name
FROM `phpbb_users` u, `phpbb_user_group` ug, `phpbb_groups` g
WHERE u.user_id = ug.user_id
AND ug.group_id = g.group_id
AND u.user_id != -1
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