ABAP Internal Tables Declaration of ABAP Internal Tables

Example

Internal Table Declaration Based on Local Type Definition

" Declaration of type
TYPES: BEGIN OF ty_flightb,
         id        TYPE fl_id,
         dat       TYPE fl_date,
         seatno    TYPE fl_seatno,
         firstname TYPE fl_fname, 
         lastname  TYPE fl_lname,
         fl_smoke  TYPE fl_smoker,
         classf    TYPE fl_class,
         classb    TYPE fl_class,
         classe    TYPE fl_class,
         meal      TYPE fl_meal,
         service   TYPE fl_service,
         discout   TYPE fl_discnt,
       END OF lty_flightb.

" Declaration of internal table
DATA t_flightb TYPE STANDARD TABLE OF ty_flightb.

Declaration based on Database Table

DATA t_flightb TYPE STANDARD TABLE OF flightb.

Inline Internal Table Declaration

Requires ABAP version > 7.4

TYPES t_itab TYPE STANDARD TABLE OF i WITH EMPTY KEY.

DATA(t_inline) = VALUE t_itab( ( 1 ) ( 2 ) ( 3 ) ).

Internal Table with Header Lines Declaration

In ABAP there are tables with header lines, and tables without header lines. Tables with header lines are an older concept and should not be used in new development.

Internal Table: Standard Table with / without header line

This code declares the table i_compc_all with the existing structure of compc_str.

DATA: i_compc_all TYPE STANDARD TABLE OF compc_str WITH HEADER LINE.
DATA: i_compc_all TYPE STANDARD TABLE OF compc_str.

Internal Table: Hashed Table with / without header line

DATA: i_map_rules_c TYPE HASHED TABLE OF /bic/ansdomm0100 WITH HEADER LINE
DATA: i_map_rules_c TYPE HASHED TABLE OF /bic/ansdomm0100

Declaration of a work area for tables without a header

A work area (commonly abbreviated wa) has the exact same structure as the table, but can contain only one line (a WA is a structure of a table with only one dimension).

DATA: i_compc_all_line LIKE LINE OF i_compc_all.