Use the column checkboxes to build your query. Header columns sets/unsets all columns
SELECT MANDT, BSTYP, BSART, RESWK, LFART, PRREG, LFRET, LBLFA, LFRFL, MEVST, MERFP, LFART1, LFART2, LFCON, REVFE, CRM_BILL, AUTO_DELV, REQPRF, FLS_LFART, ATPCONFMRP FROM T161V