ABAP CDS ON HANA-(5)テーブル結合ビュー

JOINs in CDS View

In ABAP CDS, Join between two data sources is allowed. Allowed joins are:-

• Inner Join/Join
• Left Outer Join
• Right Outer Join

The post shows a simple Inner Join between data sources form SCARR & SPFLI table.

In HANA studio, open ABAP perspective. From Project explorer, right click on the package and choose New->Other ABAP Repository Object

Choose DDL Source & select Next

Provide a name & description & select finish

Provide aSQL View Name & code lines. Save & Activate.

@AbapCatalog.sqlViewName: ‘ZFLIGHT_JOIN’
@AbapCatalog.compiler.compareFilter: true
@AccessControl.authorizationCheck: #NOT_REQUIRED
@EndUserText.label: ‘Flight with Inner Join CDS View’
define view Zflight_Join_Vw
                      as select from spfli
                      join scarr
                     on spfli.carrid = scarr.carrid
{
   key spfli.carrid,
   key scarr.carrname,
   key spfli.connid,
  spfli.countryfr,
  spfli.cityfrom,
  spfli.airpfrom,
  spfli.countryto,
  spfli.cityto,
  spfli.airpto
}

Output:

原文地址：https://www.cnblogs.com/yjyongil/p/10496444.html