[attr := ] OUTPUT(recordset [, format ] ,NAMED( name ) [,EXTEND] [,ALL])

This form writes the recordset to the workunit with the specified name. This must be a valid label (See Definition Name Rules)

The EXTEND option allows multiple OUTPUT actions to the same named result. The ALL option is used to override the implicit CHOOSEN applied to interactive queries in the Query Builder program. This specifies returning all records.

Example:

OUTPUT(CHOOSEN(people(firstname[1]='A'),10));
  // writes the A People to the query builder
OUTPUT(CHOOSEN(people(firstname[1]='A'),10),ALL);
  // writes all the A People to the query builder
OUTPUT(CHOOSEN(people(firstname[1]='A'),10),NAMED('fred'));
  // writes the A People to the fred named output
  
//a NAMED, EXTEND example:
errMsgRec := RECORD
  UNSIGNED4 code;
  STRING text;
END;
makeErrMsg(UNSIGNED4 _code,STRING _text) := DATASET([{_code, _text}], errMsgRec);
rptErrMsg(UNSIGNED4 _code,STRING _text) := OUTPUT(makeErrMsg(_code,_text),
                                                  NAMED('ErrorResult'),EXTEND);

OUTPUT(DATASET([{100, 'Failed'}],errMsgRec),NAMED('ErrorResult'),EXTEND);
  //Explicit syntax.

//Something else creates the dataset
OUTPUT(makeErrMsg(101, 'Failed again'),NAMED('ErrorResult'),EXTEND);
  
//output and dataset handled elsewhere.
rptErrMsg(102, 'And again');