Abap query with CSV option

Dear All,

I want to write one abap query in which user can select N number of fields from different tables. The number of columns will vary depending upon user requirement. But when i download the query, i want to download the query in CSV format. May be to first send the query to spool and then download the spool.

Any idea how to attach ; symbol to each and every column and download all the columns in CSV format.

Many thanks in advance for your kind help.

Best Regards,

Tarun