我想检索由用户的朋友发布/发布的状态数据。我写了下面的代码,但只获取用户自己的状态更新。有人能帮忙告诉我我的代码有什么问题吗?谢谢! NSString *fql = [NSString stringWithFormat:@"select uid,message from status where uid in (select uid2 from friend where uid1=%lld) or
是否有理由在性能方面使用这些UPDATE语句之一而不是其他语句? UPDATE myTable
SET fieldx = 1
FROM myTable AS mt
, myView AS mv
WHERE mt.id = mv.id
UPDATE myTable
SET fieldx = 1
WHERE id IN (SELECT id
FROM my