attr := DATASET( WORKUNIT( [ wuid , ] namedoutput ), struct );

This form allows you to use as a DATASET the result of an OUTPUT with the NAMED option within the same workunit, or the workunit specified by the wuid (workunit ID). This is a feature most useful in the Rapid Data Delivery Engine.

Example:

//Named Output DATASET in the same workunit:
a := OUTPUT(Person(per_st='FL') ,NAMED('FloridaFolk'));
x := DATASET(WORKUNIT('FloridaFolk'),
             RECORDOF(Person));
b := OUTPUT(x(per_first_name[1..4]='RICH'));
          
SEQUENTIAL(a,b);

//Named Output DATASET in separate workunits:
//First Workunit (wuid=W20051202-155102) contains this code:
MyRec := {STRING1 Value1,STRING1 Value2, INTEGER1 Value3};
SomeFile := DATASET([{'C','G',1},{'C','C',2},{'A','X',3},
                     {'B','G',4},{'A','B',5}],MyRec);
OUTPUT(SomeFile,NAMED('Fred'));

// Second workunit contains this code, producing the same result:
ds := DATASET(WORKUNIT('W20051202-155102','Fred'), MyRec);
OUTPUT(ds);