Use the column checkboxes to build your query. Header columns sets/unsets all columns
SELECT MANDT, LAND, JAHR, MONAT, MATZU, LFNR, KUNNR, ZPROR, ZPRSO, MATNR1, MENGE1, MATNR2, MENGE2, MATNR3, MENGE3, MATNR4, MENGE4, BELNR, DATUM, STATUS FROM ZDG20