ABAP CDS ON HANA-CDSビューでの集約

Posted 2021-02-12 yjyongil

Aggregate expression in CDS View

 

An aggregate expression calculates a single value from an operand operand by calling an aggregate function from multiple rows of a results set. They need Group By clause to aggregate values from multiple rows and  the non-aggregated fields  are specified in the GROUP BY clause.

Aggregate Functions:

Created a CDS view with below select with SUM function.

---

@AbapCatalog.sqlViewName: ‘ZFLIGHT_VW’
@AbapCatalog.compiler.compareFilter: true
@AccessControl.authorizationCheck: #CHECK
@EndUserText.label: ‘Flight View with Aggregation Operation’
define view Zflight_View 
as select from sflight
{
key sflight.carrid, 
key sflight.connid, 
sum( price ) as Total_Amount,
sflight.currency
} group by carrid, connid, currency

　　

---

Data Preview:

CDS view with SUM & COUNT functions

---

@AbapCatalog.sqlViewName: ‘ZFLIGHT_VW’
@AbapCatalog.compiler.compareFilter: true
@AccessControl.authorizationCheck: #CHECK
@EndUserText.label: ‘Flight View with Aggregation Operation’
define view Zflight_View 
as select from sflight
{
key sflight.carrid, 
key sflight.connid, 
sum( price ) as Total_Amount,
sflight.currency,
count( *) as Lines
} group by carrid, connid, currency

　　

---

Data Preview

---

SFLIGHT Table contents