SAP CDS view里的association会被编译成LEFT OUTER MANY TO ONE JOIN

一个例子:我在ABAP Development Tool里编写的CDS view association,**之后,在运行时读取该CDS view:

SAP CDS view里的association会被编译成LEFT OUTER MANY TO ONE JOIN

使用事务码ST05获得的数据库跟踪文件,发现该association被转换成了LEFT OUTER MANY TO ONE JOIN:

SAP CDS view里的association会被编译成LEFT OUTER MANY TO ONE JOIN

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SAP CDS view里的association会被编译成LEFT OUTER MANY TO ONE JOIN