外部连接经典的Oracle连接语法

Question

我需要将我的查询转换为经典的Oracle连接语法，因为我需要将它放在物化视图中。不过，我不太清楚如何做到这一点：

SELECT * FROM transactions t 
LEFT JOIN transac_detail td1 ON (t.id = t1.trans_id AND t.ttype = 'VOICE') 
LEFT JOIN transac_detail td2 ON (t.id = t2.trans_id AND t.ttype = 'BROADBAND'); 

我开始写这样的：

SELECT * FROM transactions t, transac_detail td1, transac_detail td2 
WHERE t.id = t1.trans_id(+) AND t.id = t2.trans_id(+) 

但我怎么能包括“文字”的条件？

Answer 1

原来的查询困惑。你的意思是？

SELECT t.* FROM transactions t, transac_detail td1 
WHERE t.id = td1.trans_id(+) 
and t.ttype = 'VOICE' 
union 
SELECT t.* FROM transactions t, transac_detail td2 
WHERE t.id = td2.trans_id(+) 
and t.ttype = 'BROADBAND'