ABAP Select data from SAP table EWOXTDISP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EWOXTDISP
*  INTO TABLE @DATA(IT_EWOXTDISP2).
*--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_EWOXTDISP INDEX 1 INTO DATA(WA_EWOXTDISP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWOXTDISP>-INFOTEXT = 1.
<EWOXTDISP>-INFOSELECT = 1.
<EWOXTDISP>-SELECTED = 1.
<EWOXTDISP>-ROLEDESCR = 1.
<EWOXTDISP>-SHORTTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EWOXTDISP-ICONTEXT1, sy-vline,
  WA_EWOXTDISP-ICONTEXT2, sy-vline,
  WA_EWOXTDISP-INPUTFIELD, sy-vline,
  WA_EWOXTDISP-MARKCOL1, sy-vline,
  WA_EWOXTDISP-MARKCOL2, sy-vline,
  WA_EWOXTDISP-SCRVARIANT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EWOXTDISP 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_EWOXTDISP 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_EWOXTDISP INTO WA_EWOXTDISP.


*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_EWOXTDISP_STR, 
INFOTEXT TYPE STRING,
INFOSELECT TYPE STRING,
SELECTED TYPE STRING,
ROLEDESCR TYPE STRING,
SHORTTEXT TYPE STRING,
ICONTEXT1 TYPE STRING,
ICONTEXT2 TYPE STRING,
INPUTFIELD TYPE STRING,
MARKCOL1 TYPE STRING,
MARKCOL2 TYPE STRING,
SCRVARIANT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EWOXTDISP_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_EWOXTDISP_STR-INFOTEXT sy-vline 
WA_EWOXTDISP_STR-INFOSELECT sy-vline 
WA_EWOXTDISP_STR-SELECTED sy-vline 
WA_EWOXTDISP_STR-ROLEDESCR sy-vline 
WA_EWOXTDISP_STR-SHORTTEXT sy-vline 
WA_EWOXTDISP_STR-ICONTEXT1 sy-vline 
WA_EWOXTDISP_STR-ICONTEXT2 sy-vline 
WA_EWOXTDISP_STR-INPUTFIELD sy-vline 
WA_EWOXTDISP_STR-MARKCOL1 sy-vline 
WA_EWOXTDISP_STR-MARKCOL2 sy-vline 
WA_EWOXTDISP_STR-SCRVARIANT sy-vline      INTO ld_text SEPARATED BY SPACE.

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