是否可以合併這些查詢?是否可以合併這些查詢?
$sql1 = "UPDATE users AS u, invites AS i
SET u.uinvite = u.uinvite - 1, u.ufriends = CONCAT(u.ufriends, ',$iid'), i.seen = 1
WHERE u.uid = '$uid' AND i.invited_uid = '$uid' AND i.invitor_uid = '$iid'";
$sql2 = "UPDATE users
SET ufriends = CONCAT(ufriends, ',$uid')
WHERE uid = '$iid'";
變量解釋:
$uid = the users ID $iid = the friends ID
這是我試圖合併:
$mergesql = "UPDATE invites AS i, users AS u
SET
CASE
WHEN u.uid = '$uid' THEN u.uinvite=u.uinvite-1, u.ufriends = CONCAT(u.ufriends,',$iid')
ELSE u.ufriends = CONCAT(u.ufriends,',$uid')
END
, i.seen = '1'
WHERE i.invited_uid = '$uid' AND i.invitor_uid = '$iid'
AND (u.uid = '$uid' OR u.uid = '$iid')"
我很難了解MySQL的作品時,你必須做更復雜的查詢。 我的英語也缺乏專業知識,如果你知道一個好的教程,你可以讓我真的很開心! (不是來自MySQL網站,它是殺= S)
你將如何處理朋友? (在PHP中;))我必須檢查是否有人被允許發送另一個PM。我可能必須使用爆炸,不是嗎? – SuperSpy 2011-03-14 20:07:06