ABAP Select data from SAP table D021SE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP D021SE table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to D021SE. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the D021SE table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_D021SE TYPE STANDARD TABLE OF D021SE,
      WA_D021SE TYPE D021SE,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <D021SE> TYPE D021SE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_D021SE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM D021SE
  INTO TABLE IT_D021SE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM D021SE
*  INTO TABLE @DATA(IT_D021SE2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_D021SE INDEX 1 INTO DATA(WA_D021SE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_D021SE ASSIGNING <D021SE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<D021SE>-FNAM = 1.
<D021SE>-DIDX = 1.
<D021SE>-FLG1 = 1.
<D021SE>-FLG2 = 1.
<D021SE>-FLG3 = 1.

ENDLOOP.

LOOP AT IT_D021SE INTO WA_D021SE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_D021SE-FILL, sy-vline,
  WA_D021SE-FMB1, sy-vline,
  WA_D021SE-FMB2, sy-vline,
  WA_D021SE-COLR, sy-vline,
  WA_D021SE-LENG, sy-vline,
  WA_D021SE-LINE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_D021SE you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_D021SE TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_D021SE INTO WA_D021SE.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_D021SE_STR, 
FNAM TYPE STRING,
DIDX TYPE STRING,
FLG1 TYPE STRING,
FLG2 TYPE STRING,
FLG3 TYPE STRING,
FILL TYPE STRING,
FMB1 TYPE STRING,
FMB2 TYPE STRING,
COLR TYPE STRING,
LENG TYPE STRING,
LINE TYPE STRING,
COLN TYPE STRING,
LTYP TYPE STRING,
LANF TYPE STRING,
LBLK TYPE STRING,
LREP TYPE STRING,
FMKY TYPE STRING,
PAID TYPE STRING,
UCNV TYPE STRING,
TYPE TYPE STRING,
AUTH TYPE STRING,
WNAM TYPE STRING,
DMAC TYPE STRING,
GRP1 TYPE STRING,
GRP2 TYPE STRING,
GRP3 TYPE STRING,
GRP4 TYPE STRING,
ITYP TYPE STRING,
AGLT TYPE STRING,
ADEZ TYPE STRING,
STXT TYPE STRING,
RES1 TYPE STRING,
RES2 TYPE STRING,
FTYPE TYPE STRING,
FCOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_D021SE_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_D021SE_STR-FNAM sy-vline 
WA_D021SE_STR-DIDX sy-vline 
WA_D021SE_STR-FLG1 sy-vline 
WA_D021SE_STR-FLG2 sy-vline 
WA_D021SE_STR-FLG3 sy-vline 
WA_D021SE_STR-FILL sy-vline 
WA_D021SE_STR-FMB1 sy-vline 
WA_D021SE_STR-FMB2 sy-vline 
WA_D021SE_STR-COLR sy-vline 
WA_D021SE_STR-LENG sy-vline 
WA_D021SE_STR-LINE sy-vline 
WA_D021SE_STR-COLN sy-vline 
WA_D021SE_STR-LTYP sy-vline 
WA_D021SE_STR-LANF sy-vline 
WA_D021SE_STR-LBLK sy-vline 
WA_D021SE_STR-LREP sy-vline 
WA_D021SE_STR-FMKY sy-vline 
WA_D021SE_STR-PAID sy-vline 
WA_D021SE_STR-UCNV sy-vline 
WA_D021SE_STR-TYPE sy-vline 
WA_D021SE_STR-AUTH sy-vline 
WA_D021SE_STR-WNAM sy-vline 
WA_D021SE_STR-DMAC sy-vline 
WA_D021SE_STR-GRP1 sy-vline 
WA_D021SE_STR-GRP2 sy-vline 
WA_D021SE_STR-GRP3 sy-vline 
WA_D021SE_STR-GRP4 sy-vline 
WA_D021SE_STR-ITYP sy-vline 
WA_D021SE_STR-AGLT sy-vline 
WA_D021SE_STR-ADEZ sy-vline 
WA_D021SE_STR-STXT sy-vline 
WA_D021SE_STR-RES1 sy-vline 
WA_D021SE_STR-RES2 sy-vline 
WA_D021SE_STR-FTYPE sy-vline 
WA_D021SE_STR-FCOUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.