ABAP Select data from SAP table XD021S into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP XD021S 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 XD021S. 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 XD021S 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_XD021S TYPE STANDARD TABLE OF XD021S,
      WA_XD021S TYPE XD021S,
      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: <XD021S> TYPE XD021S.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_XD021S.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM XD021S
  INTO TABLE IT_XD021S.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM XD021S
*  INTO TABLE @DATA(IT_XD021S2).
*--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_XD021S INDEX 1 INTO DATA(WA_XD021S2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_XD021S ASSIGNING <XD021S>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<XD021S>-VRSFLAG = 1.
<XD021S>-FNAM = 1.
<XD021S>-DIDX = 1.
<XD021S>-FLG1 = 1.
<XD021S>-FLG2 = 1.

ENDLOOP.

LOOP AT IT_XD021S INTO WA_XD021S.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_XD021S-FLG3, sy-vline,
  WA_XD021S-FILL, sy-vline,
  WA_XD021S-FMB1, sy-vline,
  WA_XD021S-FMB2, sy-vline,
  WA_XD021S-COLR, sy-vline,
  WA_XD021S-LENG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_XD021S 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_XD021S 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_XD021S INTO WA_XD021S.


*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_XD021S_STR, 
VRSFLAG TYPE STRING,
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,END OF T_EKKO_STR.
DATA: WA_XD021S_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_XD021S_STR-VRSFLAG sy-vline 
WA_XD021S_STR-FNAM sy-vline 
WA_XD021S_STR-DIDX sy-vline 
WA_XD021S_STR-FLG1 sy-vline 
WA_XD021S_STR-FLG2 sy-vline 
WA_XD021S_STR-FLG3 sy-vline 
WA_XD021S_STR-FILL sy-vline 
WA_XD021S_STR-FMB1 sy-vline 
WA_XD021S_STR-FMB2 sy-vline 
WA_XD021S_STR-COLR sy-vline 
WA_XD021S_STR-LENG sy-vline 
WA_XD021S_STR-LINE sy-vline 
WA_XD021S_STR-COLN sy-vline 
WA_XD021S_STR-LTYP sy-vline 
WA_XD021S_STR-LANF sy-vline 
WA_XD021S_STR-LBLK sy-vline 
WA_XD021S_STR-LREP sy-vline 
WA_XD021S_STR-FMKY sy-vline 
WA_XD021S_STR-PAID sy-vline 
WA_XD021S_STR-UCNV sy-vline 
WA_XD021S_STR-TYPE sy-vline 
WA_XD021S_STR-AUTH sy-vline 
WA_XD021S_STR-WNAM sy-vline 
WA_XD021S_STR-DMAC sy-vline 
WA_XD021S_STR-GRP1 sy-vline 
WA_XD021S_STR-GRP2 sy-vline 
WA_XD021S_STR-GRP3 sy-vline 
WA_XD021S_STR-GRP4 sy-vline 
WA_XD021S_STR-ITYP sy-vline 
WA_XD021S_STR-AGLT sy-vline 
WA_XD021S_STR-ADEZ sy-vline 
WA_XD021S_STR-STXT sy-vline 
WA_XD021S_STR-RES1 sy-vline 
WA_XD021S_STR-RES2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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