Sybase查询多个指向单个主键的外键

Question

我有2个表货币和成对的以下字段，

货币

• Currencies_ShortName

• Currencies_Id（主键）

对

• Pairs_ShortName

• Currencies_Id_1 Reference（Currencies）Currencies_Id

• Currencies_Id_2 Reference（Currencies）Currencies_Id

我想显示Pairs_ShortName，Currencies_Id_1＆amp; Currencies_Id_2 with Currencies_ShortName。

我试过了 Select a.Pairs_ShortName, a.Currencies_Id_1, a.Currencies_Id_2, b.Currencies_ShortName from Pairs a, Currencies b where a.Currencies_Id_1 = .Currencies_Id

但它只显示Pairs_ShortName，Currencies_Id_1，Currencies_ShortName。

我想显示Pairs_ShortName，Currencies_Id_1，Currencies_ShortName，Currencies_Id_2，Currencies_ShortName

Answer 1

检查以下查询，

选择
 p.Pairs_ShortName，p.Currencies_Id_1，c1.Currencies_ShortName1，p.Currencies_Id_2，c .Currencies_ShortName2
从 对p，货币c1，货币c2
其中p.Currencies_Id_1 = c1.Currencies_Id
和p.Currencies_Id_2 = c2.Currencies_Id

谢谢..