ABAP Select data from SAP table DOUI_ELEM 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 DOUI_ELEM 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 DOUI_ELEM. 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 DOUI_ELEM 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_DOUI_ELEM TYPE STANDARD TABLE OF DOUI_ELEM,
      WA_DOUI_ELEM TYPE DOUI_ELEM,
      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: <DOUI_ELEM> TYPE DOUI_ELEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DOUI_ELEM
*  INTO TABLE @DATA(IT_DOUI_ELEM2).
*--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_DOUI_ELEM INDEX 1 INTO DATA(WA_DOUI_ELEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DOUI_ELEM>-DOCM_VERSION = 1.
<DOUI_ELEM>-ENV_ID = 1.
<DOUI_ELEM>-SCREEN_ID = 1.
<DOUI_ELEM>-ELEM_ID = 1.
<DOUI_ELEM>-PARENT_ELEM_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DOUI_ELEM-PARENT_ELEM_TYPE, sy-vline,
  WA_DOUI_ELEM-ELEM_ORDER, sy-vline,
  WA_DOUI_ELEM-ELEM_TYPE, sy-vline,
  WA_DOUI_ELEM-LABEL_TXT, sy-vline,
  WA_DOUI_ELEM-LABEL_BOUND, sy-vline,
  WA_DOUI_ELEM-TOOLTIP_TXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DOUI_ELEM 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_DOUI_ELEM 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_DOUI_ELEM INTO WA_DOUI_ELEM.


*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_DOUI_ELEM_STR, 
DOCM_VERSION TYPE STRING,
ENV_ID TYPE STRING,
SCREEN_ID TYPE STRING,
ELEM_ID TYPE STRING,
PARENT_ELEM_ID TYPE STRING,
PARENT_ELEM_TYPE TYPE STRING,
ELEM_ORDER TYPE STRING,
ELEM_TYPE TYPE STRING,
LABEL_TXT TYPE STRING,
LABEL_BOUND TYPE STRING,
TOOLTIP_TXT TYPE STRING,
TOOLTIP_BOUND TYPE STRING,
ICON_ID TYPE STRING,
ICON_BOUND TYPE STRING,
UNIT TYPE STRING,
DOC_ID TYPE STRING,
VISIBLE TYPE STRING,
VISIBLE_BOUND TYPE STRING,
READONLY TYPE STRING,
READONLY_BOUND TYPE STRING,
REQUIRED TYPE STRING,
REQUIRED_BOUND TYPE STRING,
DISABLED TYPE STRING,
DISABLED_BOUND TYPE STRING,
TECHNICAL TYPE STRING,
COLOR TYPE STRING,
COLOR_BOUND TYPE STRING,
OKCODE TYPE STRING,
LAYOUT TYPE STRING,
NEW_LINE TYPE STRING,
IS_HIERARCHY TYPE STRING,
DDIC_ELEMENT_NAME TYPE STRING,
DDIC_TYPE_NAME TYPE STRING,
ABAP_TYPE_INTERNAL TYPE STRING,
ABAP_TYPE_LENGTH TYPE STRING,
ABAP_TYPE_DECIMALS TYPE STRING,
LOWERCASE TYPE STRING,
SAPGUI_DYNPRO TYPE STRING,
SAPGUI_FIELD TYPE STRING,
SAPGUI_MODULE TYPE STRING,
NAVIGATION_ID TYPE STRING,
VALIDITY_ID TYPE STRING,
HEIGHT TYPE STRING,
WIDTH TYPE STRING,
DOCM_CHANGE_CMD TYPE STRING,
DOCM_CHANGED_AT TYPE STRING,
DOCM_CHANGED_BY TYPE STRING,
DOCM_PROG_INCLUDE TYPE STRING,
DOCM_PROG_LINE TYPE STRING,
DOCM_MAKE_SCENARIO TYPE STRING,
DOCM_BUILD_DOCUMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DOUI_ELEM_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_DOUI_ELEM_STR-DOCM_VERSION sy-vline 
WA_DOUI_ELEM_STR-ENV_ID sy-vline 
WA_DOUI_ELEM_STR-SCREEN_ID sy-vline 
WA_DOUI_ELEM_STR-ELEM_ID sy-vline 
WA_DOUI_ELEM_STR-PARENT_ELEM_ID sy-vline 
WA_DOUI_ELEM_STR-PARENT_ELEM_TYPE sy-vline 
WA_DOUI_ELEM_STR-ELEM_ORDER sy-vline 
WA_DOUI_ELEM_STR-ELEM_TYPE sy-vline 
WA_DOUI_ELEM_STR-LABEL_TXT sy-vline 
WA_DOUI_ELEM_STR-LABEL_BOUND sy-vline 
WA_DOUI_ELEM_STR-TOOLTIP_TXT sy-vline 
WA_DOUI_ELEM_STR-TOOLTIP_BOUND sy-vline 
WA_DOUI_ELEM_STR-ICON_ID sy-vline 
WA_DOUI_ELEM_STR-ICON_BOUND sy-vline 
WA_DOUI_ELEM_STR-UNIT sy-vline 
WA_DOUI_ELEM_STR-DOC_ID sy-vline 
WA_DOUI_ELEM_STR-VISIBLE sy-vline 
WA_DOUI_ELEM_STR-VISIBLE_BOUND sy-vline 
WA_DOUI_ELEM_STR-READONLY sy-vline 
WA_DOUI_ELEM_STR-READONLY_BOUND sy-vline 
WA_DOUI_ELEM_STR-REQUIRED sy-vline 
WA_DOUI_ELEM_STR-REQUIRED_BOUND sy-vline 
WA_DOUI_ELEM_STR-DISABLED sy-vline 
WA_DOUI_ELEM_STR-DISABLED_BOUND sy-vline 
WA_DOUI_ELEM_STR-TECHNICAL sy-vline 
WA_DOUI_ELEM_STR-COLOR sy-vline 
WA_DOUI_ELEM_STR-COLOR_BOUND sy-vline 
WA_DOUI_ELEM_STR-OKCODE sy-vline 
WA_DOUI_ELEM_STR-LAYOUT sy-vline 
WA_DOUI_ELEM_STR-NEW_LINE sy-vline 
WA_DOUI_ELEM_STR-IS_HIERARCHY sy-vline 
WA_DOUI_ELEM_STR-DDIC_ELEMENT_NAME sy-vline 
WA_DOUI_ELEM_STR-DDIC_TYPE_NAME sy-vline 
WA_DOUI_ELEM_STR-ABAP_TYPE_INTERNAL sy-vline 
WA_DOUI_ELEM_STR-ABAP_TYPE_LENGTH sy-vline 
WA_DOUI_ELEM_STR-ABAP_TYPE_DECIMALS sy-vline 
WA_DOUI_ELEM_STR-LOWERCASE sy-vline 
WA_DOUI_ELEM_STR-SAPGUI_DYNPRO sy-vline 
WA_DOUI_ELEM_STR-SAPGUI_FIELD sy-vline 
WA_DOUI_ELEM_STR-SAPGUI_MODULE sy-vline 
WA_DOUI_ELEM_STR-NAVIGATION_ID sy-vline 
WA_DOUI_ELEM_STR-VALIDITY_ID sy-vline 
WA_DOUI_ELEM_STR-HEIGHT sy-vline 
WA_DOUI_ELEM_STR-WIDTH sy-vline 
WA_DOUI_ELEM_STR-DOCM_CHANGE_CMD sy-vline 
WA_DOUI_ELEM_STR-DOCM_CHANGED_AT sy-vline 
WA_DOUI_ELEM_STR-DOCM_CHANGED_BY sy-vline 
WA_DOUI_ELEM_STR-DOCM_PROG_INCLUDE sy-vline 
WA_DOUI_ELEM_STR-DOCM_PROG_LINE sy-vline 
WA_DOUI_ELEM_STR-DOCM_MAKE_SCENARIO sy-vline 
WA_DOUI_ELEM_STR-DOCM_BUILD_DOCUMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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