Use the column checkboxes to build your query. Header columns sets/unsets all columns
SELECT MANDT, PCARD_DOC, FISC_YEAR, PC_LINE, PC_SUBLINE, PO_NUMBER, PO_ITEM, SD_DOC, ITM_NUMBER, SHORT_TEXT, COM_CODE, EAN_UPC, QUANTITY, PO_UNIT, POUNIT_ISO, INV_QTY, SALES_UNIT, S_UNIT_ISO, TAX_CODE, TAXJURCODE, TAX_AMOUNT, CURRENCY, CURREN_ISO, AMOUNT_TA, CURREN_TA, CURRTA_ISO FROM BBP_PCLOG