ABAP Types 선언

1. 구조체(Structure) 선언

TYPES: BEGIN OF lts_employee,
         id         TYPE i,
         first_name TYPE string,
         last_name  TYPE string,
         hire_date  TYPE d,
         salary     TYPE p DECIMALS 2,
       END OF lts_employee.

DATA: ls_employee TYPE ty_employee.

2. 테이블 타입 선언

TYPES: ltt_employee TYPE TABLE OF lts_employee.

DATA: lt_employees TYPE ltt_employee.

3. 복합 예제

*-- 사용자 정의 타입 선언
TYPES: BEGIN OF lts_product,
         id          TYPE i,
         name        TYPE string,
         price       TYPE p DECIMALS 2,
         create_date TYPE d,
       END OF ty_product.

TYPES: ;tt_products TYPE TABLE OF lts_product.

*-- 변수 선언
DATA: ls_product  TYPE lts_product,
      lt_products TYPE ltt_products,
      lv_count    TYPE i,
      lv_total    TYPE p DECIMALS 2.

*-- 변수 초기화
ls_product-id = 1.
ls_product-name = '노트북'.
ls_product-price = '1500.50'.
ls_product-create_date = sy-datum.  " 현재 날짜

*-- 테이블에 추가
APPEND ls_product TO lt_products.

*-- 다른 제품 추가
CLEAR ls_product.
ls_product-id = 2.
ls_product-name = '스마트폰'.
ls_product-price = '800.75'.
ls_product-create_date = sy-datum.
APPEND ls_product TO lt_products.

*-- 제품 수 계산
DESCRIBE TABLE lt_products LINES lv_count.

*-- 모든 제품 표시
LOOP AT lt_products INTO ls_product.
  WRITE: / 'ID:', ls_product-id,
           '제품명:', ls_product-name,
           '가격:', ls_product-price,
           '등록일:', ls_product-create_date.
  
  lv_total = lv_total + ls_product-price.
ENDLOOP.

WRITE: / '총 제품 수:', lv_count.
WRITE: / '총 가격:', lv_total.