我有以下MYSQLMYSQL連接3臺
SELECT T2.name as username, T2.id as userid,
T2.lastactivity as lastactivity, T2.photo as avatar
FROM exchange AS T2
INNER JOIN
(SELECT (CASE WHEN `buddy`.`penpalA` = 887
THEN `buddy`.`penpalB`
ELSE `buddy`.`penpalA`
END) AS 'friend'
FROM `buddy`
WHERE status = 1 AND `penpalA` = 887
OR `penpalB` = 887
) AS _Temp
ON _Temp.friend = T2.`id`
如何添加另一個表給它爲了得到其他的細節,其中__Temp.friend現在T3.userid是共同點
恭喜你?這有什麼問題嗎? – 2012-01-18 21:36:32
@JakeStainer所以你的問題是什麼? – Karlson 2012-01-18 21:36:44
我如何添加另一個表到連接,並從另一個表中的用戶標識符鏈接到它的細節 – Jake 2012-01-18 21:38:14