语法格式

APPEND INITIAL LINE TO itab.

示例1

输出结果：

示例2

我们可以使用下面的语法进行内表分配指针，追加空行并赋值的操作

APPEND INITIAL LINE TO lt_tab ASSIGNING FIELD-SYMBOL(<lfs_val>).

REPORT z437_test_2025.

* 自定义数据类型
TYPES: BEGIN OF ty_item,
  id(2) TYPE n,          " 编号ID
  name(10) TYPE c,       " 姓名
  age TYPE i,            " 年龄
END OF ty_item.

TYPES: BEGIN OF ty_info,
  id(2) TYPE n,          " 编号ID
  name(10) TYPE c,       " 姓名
  shcool(10) TYPE c,     " 学校
END OF ty_info.

DATA: ls_item TYPE ty_item,                    " 结构体变量
      lt_item TYPE STANDARD TABLE OF ty_item,   " 内表
      lt_info TYPE STANDARD TABLE OF ty_info.   " 内表

* lt_item内表添加数据
lt_item = VALUE #( ( id = '10' name = 'A10' age = 10 )
                   ( id = '20' name = 'A20' age = 20 ) ).

LOOP AT lt_item INTO ls_item.
  APPEND INITIAL LINE TO lt_info ASSIGNING FIELD-SYMBOL(<lfs_info>).
  <lfs_info>-id = ls_item-id.
  <lfs_info>-name = ls_item-name.
ENDLOOP.

* 数据呈现
cl_demo_output=>display( lt_info ).

输出结果：