六十四、SAP中的内表的9种定义方式

一、内表一共有9种定义方式，如下：

二、执行如下

*&---------------------------------------------------------------------*
*& Report Z_TIANPAN_20190717_HELLO
*&---------------------------------------------------------------------*
*&
*&---------------------------------------------------------------------*
REPORT Z_TIANPAN_20190717_HELLO MESSAGE-ID Z_TIANPAN_201907_MSG.

* 内表的9种定义方法
* 自定义类型的内表
TYPES: BEGIN OF ty_itab1,
  field1 TYPE CHAR10,
  FIELD2 TYPE INT2,
END OF ty_itab1.
TYPES:t_itab1 TYPE ty_itab1 OCCURS 0.
TYPES:t_itab2 TYPE TABLE OF ty_itab1.

*定义内表变量
DATA:itab1 TYPE TABLE OF ty_itab1,                               "方法1
     itab2 TYPE t_itab1,                                         "方法2
     itab3 TYPE t_itab2.                                         "方法3
DATA itab4 LIKE itab1.                                           "方法4
*直接定义
DATA:BEGIN OF itab5 OCCURS 0,          "既是itab5工作区又是内表，itab5[]
  field1 TYPE char10,
  field2 TYPE int2,
  END OF itab5.                                                  "方法5
DATA itab6 TYPE TABLE OF sflight.                                "方法6
DATA itab7 TYPE STANDARD TABLE OF sflight.                       "方法7
*排序表，哈希表
DATA itab8 TYPE SORTED TABLE OF sflight WITH UNIQUE KEY carrid.  "方法8
DATA itab9 TYPE HASHED TABLE OF sflight WITH UNIQUE KEY carrid.  "方法9

* 字符串拼接
WRITE: / '青青子衿' & '悠悠我心'.

BREAK-POINT.