结合2个JOINS有问题.以下两个陈述都有效.我还在2个DB中包含了相关字段.我的问题是:1)如何将2个陈述合并为1个陈述？2)如何引用我的php中的行来区分结果是来自mmpreID JOIN还是mmparID JOIN？
谢谢
DB: matchmaker
mmpreID
mmparID
DB: users
uID
ufname
ulname
SELECT matchmaker.mmpreID, matchmaker.mmparID, users.uID, users.ufname, users.ulname
FROM matchmaker
LEFT JOIN users ON matchmaker.mmparID = users.uID
SELECT matchmaker.mmpreID, matchmaker.mmparID, users.uID, users.ufname, users.ulname
FROM matchmaker
LEFT JOIN users ON matchmaker.mmpreID = users.uID