ABAP Select data from SAP table RELUBIEXTKU into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RELUBIEXTKU
*  INTO TABLE @DATA(IT_RELUBIEXTKU2).
*--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_RELUBIEXTKU INDEX 1 INTO DATA(WA_RELUBIEXTKU2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RELUBIEXTKU>-BIBUKRS = 1.
<RELUBIEXTKU>-DELIMKE01 = 1.
<RELUBIEXTKU>-BIRECNNR = 1.
<RELUBIEXTKU>-DELIMKE02 = 1.
<RELUBIEXTKU>-BIRECORDTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RELUBIEXTKU-DELIMKE03, sy-vline,
  WA_RELUBIEXTKU-INTRENOAO, sy-vline,
  WA_RELUBIEXTKU-DELIMKU01, sy-vline,
  WA_RELUBIEXTKU-COUNTRY, sy-vline,
  WA_RELUBIEXTKU-DELIMKU02, sy-vline,
  WA_RELUBIEXTKU-STATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RELUBIEXTKU 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_RELUBIEXTKU 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_RELUBIEXTKU INTO WA_RELUBIEXTKU.


*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 BIRECNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RELUBIEXTKU-BIRECNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELUBIEXTKU-BIRECNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field FEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RELUBIEXTKU-FEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELUBIEXTKU-FEINS.
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_RELUBIEXTKU_STR, 
BIBUKRS TYPE STRING,
DELIMKE01 TYPE STRING,
BIRECNNR TYPE STRING,
DELIMKE02 TYPE STRING,
BIRECORDTYPE TYPE STRING,
DELIMKE03 TYPE STRING,
INTRENOAO TYPE STRING,
DELIMKU01 TYPE STRING,
COUNTRY TYPE STRING,
DELIMKU02 TYPE STRING,
STATE TYPE STRING,
DELIMKU03 TYPE STRING,
SLIDENUM TYPE STRING,
DELIMKU04 TYPE STRING,
CLASSIFICATION TYPE STRING,
DELIMKU05 TYPE STRING,
XMCLASS TYPE STRING,
DELIMKU06 TYPE STRING,
BIAREAC TYPE STRING,
DELIMKU07 TYPE STRING,
FEINS TYPE STRING,
DELIMKU08 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RELUBIEXTKU_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_RELUBIEXTKU_STR-BIBUKRS sy-vline 
WA_RELUBIEXTKU_STR-DELIMKE01 sy-vline 
WA_RELUBIEXTKU_STR-BIRECNNR sy-vline 
WA_RELUBIEXTKU_STR-DELIMKE02 sy-vline 
WA_RELUBIEXTKU_STR-BIRECORDTYPE sy-vline 
WA_RELUBIEXTKU_STR-DELIMKE03 sy-vline 
WA_RELUBIEXTKU_STR-INTRENOAO sy-vline 
WA_RELUBIEXTKU_STR-DELIMKU01 sy-vline 
WA_RELUBIEXTKU_STR-COUNTRY sy-vline 
WA_RELUBIEXTKU_STR-DELIMKU02 sy-vline 
WA_RELUBIEXTKU_STR-STATE sy-vline 
WA_RELUBIEXTKU_STR-DELIMKU03 sy-vline 
WA_RELUBIEXTKU_STR-SLIDENUM sy-vline 
WA_RELUBIEXTKU_STR-DELIMKU04 sy-vline 
WA_RELUBIEXTKU_STR-CLASSIFICATION sy-vline 
WA_RELUBIEXTKU_STR-DELIMKU05 sy-vline 
WA_RELUBIEXTKU_STR-XMCLASS sy-vline 
WA_RELUBIEXTKU_STR-DELIMKU06 sy-vline 
WA_RELUBIEXTKU_STR-BIAREAC sy-vline 
WA_RELUBIEXTKU_STR-DELIMKU07 sy-vline 
WA_RELUBIEXTKU_STR-FEINS sy-vline 
WA_RELUBIEXTKU_STR-DELIMKU08 sy-vline      INTO ld_text SEPARATED BY SPACE.

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