How to consume exposed association in ABAP

Hi,

I know the concept of exposed association. It's a join on demand association but i don't know how to consume exposed association in abap. How can we achieve join on demand while writing select statement.

define view zexposed_cds as select from spfli as sp

association[1] to scarr as _scarr

on sp.carrid = _scarr.carrid

{

key carrid,

_scarr

}

Thanks

Ravi