ABAP Select data from SAP table RHOM_ORGCTBD_ELMNTS_FIELDS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RHOM_ORGCTBD_ELMNTS_FIELDS
*  INTO TABLE @DATA(IT_RHOM_ORGCTBD_ELMNTS_FIELDS2).
*--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_RHOM_ORGCTBD_ELMNTS_FIELDS INDEX 1 INTO DATA(WA_RHOM_ORGCTBD_ELMNTS_FIELDS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RHOM_ORGCTBD_ELMNTS_FIELDS>-ORGCTR_ID = 1.
<RHOM_ORGCTBD_ELMNTS_FIELDS>-ORGCTR_NAME_LONG = 1.
<RHOM_ORGCTBD_ELMNTS_FIELDS>-APPROVAL_STATUS_CODE = 1.
<RHOM_ORGCTBD_ELMNTS_FIELDS>-APPROVAL_STATUS_NAME = 1.
<RHOM_ORGCTBD_ELMNTS_FIELDS>-START_DATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RHOM_ORGCTBD_ELMNTS_FIELDS-END_DATE, sy-vline,
  WA_RHOM_ORGCTBD_ELMNTS_FIELDS-READINESS_MAT, sy-vline,
  WA_RHOM_ORGCTBD_ELMNTS_FIELDS-READINESS_PERS, sy-vline,
  WA_RHOM_ORGCTBD_ELMNTS_FIELDS-READINESS_TRAI, sy-vline,
  WA_RHOM_ORGCTBD_ELMNTS_FIELDS-OWNER_NATION, sy-vline,
  WA_RHOM_ORGCTBD_ELMNTS_FIELDS-SERVICE_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RHOM_ORGCTBD_ELMNTS_FIELDS 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_RHOM_ORGCTBD_ELMNTS_FIELDS 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_RHOM_ORGCTBD_ELMNTS_FIELDS INTO WA_RHOM_ORGCTBD_ELMNTS_FIELDS.


*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.

*Conversion exit ALPHA, internal->external for field ADDRNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RHOM_ORGCTBD_ELMNTS_FIELDS-ADDRNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RHOM_ORGCTBD_ELMNTS_FIELDS-ADDRNUMBER.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RHOM_ORGCTBD_ELMNTS_FIELDS_STR, 
ORGCTR_ID TYPE STRING,
ORGCTR_NAME_LONG TYPE STRING,
APPROVAL_STATUS_CODE TYPE STRING,
APPROVAL_STATUS_NAME TYPE STRING,
START_DATE TYPE STRING,
END_DATE TYPE STRING,
READINESS_MAT TYPE STRING,
READINESS_PERS TYPE STRING,
READINESS_TRAI TYPE STRING,
OWNER_NATION TYPE STRING,
SERVICE_ID TYPE STRING,
FORCE_LEVEL TYPE STRING,
LEVEL_GROUP TYPE STRING,
BRANCH_ID TYPE STRING,
CASE_TYPE TYPE STRING,
AGENCY TYPE STRING,
SERVICE_TYPE TYPE STRING,
BRANCHS_ID TYPE STRING,
SC TYPE STRING,
UIC TYPE STRING,
REF_OBJID TYPE STRING,
FORCE_CLASS TYPE STRING,
READINESS TYPE STRING,
ADDRNUMBER TYPE STRING,
DATE_FROM TYPE STRING,
NATION TYPE STRING,
LONGITUDE TYPE STRING,
LATITUDE TYPE STRING,
ALTITUDE TYPE STRING,
GEOLOC TYPE STRING,
REMARK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RHOM_ORGCTBD_ELMNTS_FIELDS_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_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-ORGCTR_ID sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-ORGCTR_NAME_LONG sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-APPROVAL_STATUS_CODE sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-APPROVAL_STATUS_NAME sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-START_DATE sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-END_DATE sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-READINESS_MAT sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-READINESS_PERS sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-READINESS_TRAI sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-OWNER_NATION sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-SERVICE_ID sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-FORCE_LEVEL sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-LEVEL_GROUP sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-BRANCH_ID sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-CASE_TYPE sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-AGENCY sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-SERVICE_TYPE sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-BRANCHS_ID sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-SC sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-UIC sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-REF_OBJID sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-FORCE_CLASS sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-READINESS sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-ADDRNUMBER sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-DATE_FROM sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-NATION sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-LONGITUDE sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-LATITUDE sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-ALTITUDE sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-GEOLOC sy-vline 
WA_RHOM_ORGCTBD_ELMNTS_FIELDS_STR-REMARK sy-vline      INTO ld_text SEPARATED BY SPACE.

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