To produce a header line in an external file:
|1.||Specify the main export task with output file <file1>, and embed it in a batch job.|
|2.||Define an E_DUMMY external set with SQL statement:|
SELECT '<Header message>'
|You have to use a single-record dummy table here.|
|3.||Define an ET_DUMMY export task based on the E_DUMMY external set and with output file <file1>.|
|4.||Add the ET_DUMMY export task to the job, giving it a lower sequence number than the main export task.|
To get a footer line, use the same strategy with an export task at the end of the job.