Use the column checkboxes to build your query. Header columns sets/unsets all columns
SELECT MANDT, PLVAR, OTYPE, OBJID, SUBTY, ISTAT, BEGDA, ENDDA, VARYF, SEQNR, INFTY, OTJID, AEDTM, UNAME, REASN, HISTO, ITXNR, MAIL, DATE_SEND, FLAG_READ, DATE_READ, ACT_TYPE, POSTING_HEADER, MAIL_HEADER, MAIL_GUID, ACT_GUID, SENDER_UNAME, SENDER_NAME, SENDER_EMAIL, REQUISITION_TYPE, CONTENT_TYPE, MAIL_STATUS, DATE_DELETE, PINST_GUID, RECEIVER_EMAIL FROM HRP5146