这是我的SQL查询：
$result = mysql_query("
SELECT t.tid, t.title, t.time, t.authorid, t.photo, f.fuid, f.myuid, u.username as writer
FROM topics as t, friends as f, users as u
WHERE cid='$cid'
AND u.id=t.authorid
AND (
f.fuid=t.authorid AND f.myuid='$myid'
OR
f.myuid=t.authorid AND f.fuid='$myid'
)
ORDER BY tid DESC
LIMIT $start, $perpage
");
我只在朋友发布内容时得到输出，但在我发布时没有得到任何内容。我的朋友可以查看我的更新，但我自己不能。
如果没有更多信息（例如示例数据），我会说：尝试以下操作：
$result = mysql_query("
SELECT t.tid, t.title, t.time, t.authorid, t.photo, f.fuid, f.myuid, u.username as writer
FROM topics as t, friends as f, users as u
WHERE cid='$cid'
AND u.id=t.authorid
AND (
f.fuid=t.authorid AND f.myuid='$myid'
OR
f.myuid=t.authorid AND f.fuid='$myid'
OR
t.autorid='$myid'
)
ORDER BY tid DESC
LIMIT $start, $perpage
");