Use the column checkboxes to build your query. Header columns sets/unsets all columns
SELECT MANDT, MATNR, LGNUM, SGT_SCAT, LVORM, LGBKZ, LTKZE, LTKZA, LHMG1, LHMG2, LHMG3, LHME1, LHME2, LHME3, LETY1, LETY2, LETY3, LVSME, KZZUL, BLOCK, KZMBF, BSSKZ, MKAPV, BEZME, PLKPT, VOMEM, L2SKR FROM SGT_MLGN