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Sql 显示与一个主键链接的两个外键_Sql_Oracle - Fatal编程技术网

Sql 显示与一个主键链接的两个外键

Sql 显示与一个主键链接的两个外键,sql,oracle,Sql,Oracle,这些是我的桌子 Stop id name a place1 b place2 c place3 d place4 e place5 f place6 g place7 Trip id start finish 1 a c 3 d f 4 e

这些是我的桌子

Stop

id     name
a        place1
b        place2          
c        place3
d        place4
e        place5
f        place6
g        place7

Trip

id       start       finish
1          a            c
3          d            f
4          e            g
5          b            f
目前,我正在使用以下sql查询:

SELECT trip.id, starts, ends
FROM trip,
(SELECT name as starts
FROM trip, stop
WHERE stop.id=trip.start),
(SELECT name as ends
FROM trip, stop
WHERE stop.id=trip.finish);
这给了我这种感觉

id       starts       ends
1        place1       place7
2        place1       place7
3        place1       place7
4        place1       place7
5        place1       place7
1        place1       place6
and so on...
我想显示行程表的内容,并用指定的名称替换站点ID(a、b、c…)

id       start       finish
1        place1      place3
3        place4      place6
4        place5      place7
5        place2      place6
站点id和跳闸id为PKs, Trip表中的Start和Finish列是Stop表中Stop id的外键。我在oracle developer 3.2版上工作。
你能帮忙吗。

你在找这个吗

SELECT
    T.id,
    S1.name Start,
    S2.name End
FROM Trip T
    JOIN Stop S1
        T.Start = S1.Id
    JOIN Stop S2
        T.End = S2.Id