sapabap開(kāi)發(fā)基礎(chǔ)自寫(xiě)留用(編輯修改稿)
2024-07-22 22:21 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 carr~carrid scarr~carrname spfli~connid spfli~cityfromspfli~cityto FROM scarr INNER JOIN spfli ON scarr~carrid = spfli~carrid INTO CORRESPONDING FIELDS OF TABLE itab.、更多表查詢SELECT spfli~carrid spfli~connid spfli~cityfrom spfli~citytosbook~fldate sbook~bookid sbook~customid sbook~custtype scustom~namescustom~street FROM spfli INNER JOIN sbook ON spfli~carrid = sbook~carrid AND spfli~connid = sbook~connid INNER JOIN scustom ON sbook~customid = scustom~id INTO CORRESPONDING FIELDS OF TABLE itab.各種關(guān)鍵字APPEND wa TO MOVE TO 結(jié)構(gòu)賦值modify itab from wa根據(jù)結(jié)構(gòu)修改內(nèi)表MOVECORRESPONDING str1 TO 分支研究data:v1 type i value 39。139。.v2 type i.do 50 times.v2 = v1 ** 2.write : v1,v2.v1=v1 +1.enddo.函數(shù)來(lái)了字符串操作CONCATENATE wafldate waweek INTO wa SEPARATED BY39。/星期39。.子程序三種類型：值傳遞，值傳遞并返回 ，只是傳遞一個(gè)實(shí)參的拷貝，適用于值不能改變的單值，不適合內(nèi)表參數(shù)傳遞。 ，實(shí)參的拷貝發(fā)生改變，返回給實(shí)參，適合于可以改變的單值傳遞，不適合內(nèi)表參數(shù)傳遞。 ，子程序運(yùn)行結(jié)束后，實(shí)參根據(jù)子程序運(yùn)行結(jié)果，適合單值也適合內(nèi)表。看看代碼就知道怎么用了DATA : a TYPE i, b TYPE i, c TYPE i.PERFORM x USING PERFORM y CHANGING PERFORM z CHANGING PERFORM xyz USING a CHANGING b
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