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, CLGRI, PERCT, CLGRP, RESAR, ACCNT, CLCOD, WRATE, EXINN, PRATE FROM P2RK_WCB1