ABAP Select data from SAP table ESH_S_MU_NODE_BACKEND_NAV 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 ESH_S_MU_NODE_BACKEND_NAV 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 ESH_S_MU_NODE_BACKEND_NAV. 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 ESH_S_MU_NODE_BACKEND_NAV 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_ESH_S_MU_NODE_BACKEND_NAV TYPE STANDARD TABLE OF ESH_S_MU_NODE_BACKEND_NAV,
      WA_ESH_S_MU_NODE_BACKEND_NAV TYPE ESH_S_MU_NODE_BACKEND_NAV,
      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: <ESH_S_MU_NODE_BACKEND_NAV> TYPE ESH_S_MU_NODE_BACKEND_NAV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESH_S_MU_NODE_BACKEND_NAV
*  INTO TABLE @DATA(IT_ESH_S_MU_NODE_BACKEND_NAV2).
*--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_ESH_S_MU_NODE_BACKEND_NAV INDEX 1 INTO DATA(WA_ESH_S_MU_NODE_BACKEND_NAV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESH_S_MU_NODE_BACKEND_NAV>-SWCV = 1.
<ESH_S_MU_NODE_BACKEND_NAV>-SYS_GROUP = 1.
<ESH_S_MU_NODE_BACKEND_NAV>-BO_NAME = 1.
<ESH_S_MU_NODE_BACKEND_NAV>-NODE_NAME = 1.
<ESH_S_MU_NODE_BACKEND_NAV>-UI_OPERATION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESH_S_MU_NODE_BACKEND_NAV-UI_TYPE, sy-vline,
  WA_ESH_S_MU_NODE_BACKEND_NAV-TARGET_NAV_ID, sy-vline,
  WA_ESH_S_MU_NODE_BACKEND_NAV-TARGET_NAV_ID_READONLY, sy-vline,
  WA_ESH_S_MU_NODE_BACKEND_NAV-DESCR, sy-vline,
  WA_ESH_S_MU_NODE_BACKEND_NAV-DESCR_READONLY, sy-vline,
  WA_ESH_S_MU_NODE_BACKEND_NAV-OPERATION_ORDER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESH_S_MU_NODE_BACKEND_NAV 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_ESH_S_MU_NODE_BACKEND_NAV 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_ESH_S_MU_NODE_BACKEND_NAV INTO WA_ESH_S_MU_NODE_BACKEND_NAV.


*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_ESH_S_MU_NODE_BACKEND_NAV_STR, 
SWCV TYPE STRING,
SYS_GROUP TYPE STRING,
BO_NAME TYPE STRING,
NODE_NAME TYPE STRING,
UI_OPERATION TYPE STRING,
UI_TYPE TYPE STRING,
TARGET_NAV_ID TYPE STRING,
TARGET_NAV_ID_READONLY TYPE STRING,
DESCR TYPE STRING,
DESCR_READONLY TYPE STRING,
OPERATION_ORDER TYPE STRING,
TARGET_OPERATION TYPE STRING,
TARGET_OPERATION_READONLY TYPE STRING,
OTYPNBN_GUID TYPE STRING,
IS_OBJECT_LINK TYPE STRING,
IS_OBJECT_LINK_READONLY TYPE STRING,
DETAIL_UI TYPE STRING,
DETAIL_UI_READONLY TYPE STRING,
ORG_SYSREL_GUID TYPE STRING,
IS_SWITCHED TYPE STRING,
IS_VISIBLE_TARGET_NAV_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESH_S_MU_NODE_BACKEND_NAV_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_ESH_S_MU_NODE_BACKEND_NAV_STR-SWCV sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-SYS_GROUP sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-BO_NAME sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-NODE_NAME sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-UI_OPERATION sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-UI_TYPE sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-TARGET_NAV_ID sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-TARGET_NAV_ID_READONLY sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-DESCR sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-DESCR_READONLY sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-OPERATION_ORDER sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-TARGET_OPERATION sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-TARGET_OPERATION_READONLY sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-OTYPNBN_GUID sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-IS_OBJECT_LINK sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-IS_OBJECT_LINK_READONLY sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-DETAIL_UI sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-DETAIL_UI_READONLY sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-ORG_SYSREL_GUID sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-IS_SWITCHED sy-vline 
WA_ESH_S_MU_NODE_BACKEND_NAV_STR-IS_VISIBLE_TARGET_NAV_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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