Use the column checkboxes to build your query. Header columns sets/unsets all columns
SELECT MANDT, DCT_PERNR, DCT_SEQNR, DCT_ROWID, ABZNR, ABART, APZNR, CNTR1, CNTR2, CNTR3, ENDDA, BEGDA, VTKEN, BEGUZ, ENDUZ, AWART, ABWTG, STDAZ, ABRTG, ABRST, KALTG, KENN1, KENN2, KLBEW, PSARB, OBEGD, OENDD, REFEX, ORDEX, SUBTY, OBJPS, SPRPS, SEQNR, ALLDF, HRSIF, OCABS, DOCNR, ALZNR, NXDFL, START_BEF_ZERO FROM P2RX_AB