ABAP Select data from SAP table D021X into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP D021X 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 D021X. 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 D021X 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_D021X TYPE STANDARD TABLE OF D021X,
      WA_D021X TYPE D021X,
      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: <D021X> TYPE D021X.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_D021X.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM D021X
  INTO TABLE IT_D021X.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM D021X
*  INTO TABLE @DATA(IT_D021X2).
*--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_D021X INDEX 1 INTO DATA(WA_D021X2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_D021X ASSIGNING <D021X>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<D021X>-VRSFLAG = 1.
<D021X>-FNAM = 1.
<D021X>-DIDX = 1.
<D021X>-FLG1 = 1.
<D021X>-FLG2 = 1.

ENDLOOP.

LOOP AT IT_D021X INTO WA_D021X.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_D021X-FLG3, sy-vline,
  WA_D021X-FILL, sy-vline,
  WA_D021X-FMB1, sy-vline,
  WA_D021X-FMB2, sy-vline,
  WA_D021X-COLR, sy-vline,
  WA_D021X-LENG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_D021X 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_D021X 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_D021X INTO WA_D021X.


*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_D021X_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,
F4AVAILABL TYPE STRING,
DROPDOWN TYPE STRING,
DROPTYP TYPE STRING,
DROPVAL TYPE STRING,
DROPSTYLE TYPE STRING,
ENTRYTYPE TYPE STRING,
SWITCHID TYPE STRING,
SHOWHIDE TYPE STRING,
LTR TYPE STRING,
BIDICTRL TYPE STRING,
OUTPUTSTYLE TYPE STRING,
NOINPUTHISTORY TYPE STRING,
AMPMENABLED TYPE STRING,
RESERVE_1 TYPE STRING,
DDTYPENAME TYPE STRING,
FUNCTYPE TYPE STRING,
FUNCCODE TYPE STRING,
CTMENUPROG TYPE STRING,
CTMENUSTAT TYPE STRING,
LABELLEFT TYPE STRING,
LABELRIGHT TYPE STRING,
DBLCLICK TYPE STRING,
CTMENUFLG TYPE STRING,
INFOBUTTON TYPE STRING,
RECENTRY TYPE STRING,
RESERVE_5 TYPE STRING,
RES2 TYPE STRING,
HYPERLINK TYPE STRING,
AREATITLE TYPE STRING,
EMPHASIZED TYPE STRING,
KNOWLOBJ TYPE STRING,
KEEPTAB TYPE STRING,
TEXTFIELD TYPE STRING,
TOOLTIPTXT TYPE STRING,
BARCODEINP TYPE STRING,
SPEECH TYPE STRING,
RFID TYPE STRING,
ISRFIDDATA TYPE STRING,
CUSTOMPROPERTY TYPE STRING,
DISABLEIMPLICITLABLES TYPE STRING,
FIORIDISABLEAUTOALIGN TYPE STRING,
FIORIDISABLEAUTOEXPAND TYPE STRING,
FIORINAVIGATIONBUTTON TYPE STRING,
ITEMCOUNT TYPE STRING,
FTYPE TYPE STRING,
FCOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_D021X_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_D021X_STR-VRSFLAG sy-vline 
WA_D021X_STR-FNAM sy-vline 
WA_D021X_STR-DIDX sy-vline 
WA_D021X_STR-FLG1 sy-vline 
WA_D021X_STR-FLG2 sy-vline 
WA_D021X_STR-FLG3 sy-vline 
WA_D021X_STR-FILL sy-vline 
WA_D021X_STR-FMB1 sy-vline 
WA_D021X_STR-FMB2 sy-vline 
WA_D021X_STR-COLR sy-vline 
WA_D021X_STR-LENG sy-vline 
WA_D021X_STR-LINE sy-vline 
WA_D021X_STR-COLN sy-vline 
WA_D021X_STR-LTYP sy-vline 
WA_D021X_STR-LANF sy-vline 
WA_D021X_STR-LBLK sy-vline 
WA_D021X_STR-LREP sy-vline 
WA_D021X_STR-FMKY sy-vline 
WA_D021X_STR-PAID sy-vline 
WA_D021X_STR-UCNV sy-vline 
WA_D021X_STR-TYPE sy-vline 
WA_D021X_STR-AUTH sy-vline 
WA_D021X_STR-WNAM sy-vline 
WA_D021X_STR-DMAC sy-vline 
WA_D021X_STR-GRP1 sy-vline 
WA_D021X_STR-GRP2 sy-vline 
WA_D021X_STR-GRP3 sy-vline 
WA_D021X_STR-GRP4 sy-vline 
WA_D021X_STR-ITYP sy-vline 
WA_D021X_STR-AGLT sy-vline 
WA_D021X_STR-ADEZ sy-vline 
WA_D021X_STR-STXT sy-vline 
WA_D021X_STR-F4AVAILABL sy-vline 
WA_D021X_STR-DROPDOWN sy-vline 
WA_D021X_STR-DROPTYP sy-vline 
WA_D021X_STR-DROPVAL sy-vline 
WA_D021X_STR-DROPSTYLE sy-vline 
WA_D021X_STR-ENTRYTYPE sy-vline 
WA_D021X_STR-SWITCHID sy-vline 
WA_D021X_STR-SHOWHIDE sy-vline 
WA_D021X_STR-LTR sy-vline 
WA_D021X_STR-BIDICTRL sy-vline 
WA_D021X_STR-OUTPUTSTYLE sy-vline 
WA_D021X_STR-NOINPUTHISTORY sy-vline 
WA_D021X_STR-AMPMENABLED sy-vline 
WA_D021X_STR-RESERVE_1 sy-vline 
WA_D021X_STR-DDTYPENAME sy-vline 
WA_D021X_STR-FUNCTYPE sy-vline 
WA_D021X_STR-FUNCCODE sy-vline 
WA_D021X_STR-CTMENUPROG sy-vline 
WA_D021X_STR-CTMENUSTAT sy-vline 
WA_D021X_STR-LABELLEFT sy-vline 
WA_D021X_STR-LABELRIGHT sy-vline 
WA_D021X_STR-DBLCLICK sy-vline 
WA_D021X_STR-CTMENUFLG sy-vline 
WA_D021X_STR-INFOBUTTON sy-vline 
WA_D021X_STR-RECENTRY sy-vline 
WA_D021X_STR-RESERVE_5 sy-vline 
WA_D021X_STR-RES2 sy-vline 
WA_D021X_STR-HYPERLINK sy-vline 
WA_D021X_STR-AREATITLE sy-vline 
WA_D021X_STR-EMPHASIZED sy-vline 
WA_D021X_STR-KNOWLOBJ sy-vline 
WA_D021X_STR-KEEPTAB sy-vline 
WA_D021X_STR-TEXTFIELD sy-vline 
WA_D021X_STR-TOOLTIPTXT sy-vline 
WA_D021X_STR-BARCODEINP sy-vline 
WA_D021X_STR-SPEECH sy-vline 
WA_D021X_STR-RFID sy-vline 
WA_D021X_STR-ISRFIDDATA sy-vline 
WA_D021X_STR-CUSTOMPROPERTY sy-vline 
WA_D021X_STR-DISABLEIMPLICITLABLES sy-vline 
WA_D021X_STR-FIORIDISABLEAUTOALIGN sy-vline 
WA_D021X_STR-FIORIDISABLEAUTOEXPAND sy-vline 
WA_D021X_STR-FIORINAVIGATIONBUTTON sy-vline 
WA_D021X_STR-ITEMCOUNT sy-vline 
WA_D021X_STR-FTYPE sy-vline 
WA_D021X_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.