Use the column checkboxes to build your query. Header columns sets/unsets all columns
SELECT MANDT, DCT_PERNR, DCT_SEQNR, DCT_ROWID, CNTR1, BEGDA, ENDDA, INSTY, CLEVL, WAEHI, ERLUP, ERLLO, PCTER, AMTER, RULER, EELUP, EELLO, PCTEE, AMTEE, RULEE, WTYPE, ERWTP, EEWTP FROM P2IS_INS