利用下面语法可以定义由多个字段组成的结构体类型
TYPES BEGIN OF struc_type
...
{TYPES dtype...} | {INCLUDE {TYPE|STRUCTURE}...},
...
TYPES END OF struc_type.
二、声明结构体类型
声明复合型结构体类型，并利用此类型定义结构体变量的方法
*声明结构体类型
TYPES:BEGIN OF T_PEOPLE,
NAME TYPE C LENGTH 20,
COUNTRY TYPE C LENGTH 15,
CITY TYPE C LENGTH 10,
END OF T_PEOPLE.
*定义结构体变量
DATA GS_PEOPLE TYPE T_PEOPLE.
GS_PEOPLE-NAME = 'NAME'.
GS_PEOPLE-COUNTRY = 'COUNTRY'.
GS_PEOPLE-CITY = 'Beijing'.
三、嵌套结构体类型
利用INCLUDE STRUCTRER语句，可以把DATA语句定义的结构体或者ABAP数据字典存在的结构体包含到嵌套结构体中。
*声明结构体类型
TYPES:BEGIN OF T_PEOPLE,
NAME TYPE C LENGTH 20,
COUNTRY TYPE C LENGTH 15,
CITY TYPE C LENGTH 10,
END OF T_PEOPLE.
*定义结构体变量
DATA GS_PEOPLE TYPE T_PEOPLE.
GS_PEOPLE-NAME = 'NAME'.
GS_PEOPLE-COUNTRY = 'COUNTRY'.
GS_PEOPLE-CITY = 'Beijing'.
*定义嵌套结构体变量
data:BEGIN OF GS_PEOPLE1.
INCLUDE STRUCTURE GS_PEOPLE AS PEO.
data:PHONE TYPE C LENGTH 10,
END OF GS_PEOPLE1.
GS_PEOPLE1-PEO-NAME = '123'.
WRITE GS_PEOPLE1-PEO-NAME.
四、包含结构体类型
如果在INCLUDE STRUCTURE中不使用 as 语句，那么则是直接包含结构体，包含后使用各个项目时，要直接用第一级别的结构体名定义字段名。
*定义包含结构体变量
data:BEGIN OF GS_PEOPLE2.
INCLUDE STRUCTURE GS_PEOPLE .
data:PHONE TYPE C LENGTH 10,
END OF GS_PEOPLE2.
GS_PEOPLE2-NAME = '456'.
WRITE GS_PEOPLE2-NAME.
