abap 中at new的用法
(摘录)1、AT New事件触发说明如 AT New f.f 是内表的一个字段,当f字段或者f字段左边的字段内容发生变化是该事件后面的语句都会执行。TYPES: BEGIN OF COMPANIES_TYPE, NAME(30), PRODUCT(20), SALES TYPE I, END OF COMPANIES_TYPE. DATA: COMPANIES TYPE STANDARD TABLE OF COMPANIES_TYPE WITH NON-UNIQUE DEFAULT KEY INITIAL SIZE 20, WA_COMPANIES TYPE COMPANIES_TYPE. ... LOOP AT COMPANIES INTO WA_COMPANIES. AT NEW PRODUCT. NEW-PAGE. WRITE