ABAP Select data from SAP table BUP_S_RELT_RELNR_TABIX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BUP_S_RELT_RELNR_TABIX
*  INTO TABLE @DATA(IT_BUP_S_RELT_RELNR_TABIX2).
*--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_BUP_S_RELT_RELNR_TABIX INDEX 1 INTO DATA(WA_BUP_S_RELT_RELNR_TABIX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BUP_S_RELT_RELNR_TABIX>-RELNR = 1.
<BUP_S_RELT_RELNR_TABIX>-TABIX = 1.
<BUP_S_RELT_RELNR_TABIX>-CROSS_DEP = 1.
<BUP_S_RELT_RELNR_TABIX>-REL_CUSTO = 1.
<BUP_S_RELT_RELNR_TABIX>-CLIENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BUP_S_RELT_RELNR_TABIX-RELTYP, sy-vline,
  WA_BUP_S_RELT_RELNR_TABIX-XRF, sy-vline,
  WA_BUP_S_RELT_RELNR_TABIX-RLTP1, sy-vline,
  WA_BUP_S_RELT_RELNR_TABIX-RLTP2, sy-vline,
  WA_BUP_S_RELT_RELNR_TABIX-DFTYP, sy-vline,
  WA_BUP_S_RELT_RELNR_TABIX-APPLI_TAB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BUP_S_RELT_RELNR_TABIX 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_BUP_S_RELT_RELNR_TABIX 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_BUP_S_RELT_RELNR_TABIX INTO WA_BUP_S_RELT_RELNR_TABIX.


*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 RELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BUP_S_RELT_RELNR_TABIX-RELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BUP_S_RELT_RELNR_TABIX-RELNR.
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_BUP_S_RELT_RELNR_TABIX_STR, 
RELNR TYPE STRING,
TABIX TYPE STRING,
CROSS_DEP TYPE STRING,
REL_CUSTO TYPE STRING,
CLIENT TYPE STRING,
RELTYP TYPE STRING,
XRF TYPE STRING,
RLTP1 TYPE STRING,
RLTP2 TYPE STRING,
DFTYP TYPE STRING,
APPLI_TAB TYPE STRING,
VARNR TYPE STRING,
RLTCATGRP1 TYPE STRING,
RLTCATGRP2 TYPE STRING,
XDIRECTION TYPE STRING,
TIMDP TYPE STRING,
CARDI TYPE STRING,
CARDI_P1 TYPE STRING,
CARDI_P2 TYPE STRING,
XORGA_P1 TYPE STRING,
XPERS_P1 TYPE STRING,
XGROU_P1 TYPE STRING,
XORGA_P2 TYPE STRING,
XPERS_P2 TYPE STRING,
XGROU_P2 TYPE STRING,
XDFREL TYPE STRING,
XDFREL2 TYPE STRING,
PROTECT TYPE STRING,
OWNER_BO TYPE STRING,
BEZ50 TYPE STRING,
BEZ50_2 TYPE STRING,
RTITL TYPE STRING,
XSUPPRESS TYPE STRING,
POSNR TYPE STRING,
POSNR_2 TYPE STRING,
DIRFLG TYPE STRING,
DFTXT TYPE STRING,
XSPEC TYPE STRING,
DFTVAL TYPE STRING,
TD_ATTRIBUTES TYPE STRING,
ACT_KEYS_SUCC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BUP_S_RELT_RELNR_TABIX_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_BUP_S_RELT_RELNR_TABIX_STR-RELNR sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-TABIX sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-CROSS_DEP sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-REL_CUSTO sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-CLIENT sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-RELTYP sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-XRF sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-RLTP1 sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-RLTP2 sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-DFTYP sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-APPLI_TAB sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-VARNR sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-RLTCATGRP1 sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-RLTCATGRP2 sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-XDIRECTION sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-TIMDP sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-CARDI sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-CARDI_P1 sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-CARDI_P2 sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-XORGA_P1 sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-XPERS_P1 sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-XGROU_P1 sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-XORGA_P2 sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-XPERS_P2 sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-XGROU_P2 sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-XDFREL sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-XDFREL2 sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-PROTECT sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-OWNER_BO sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-BEZ50 sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-BEZ50_2 sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-RTITL sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-XSUPPRESS sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-POSNR sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-POSNR_2 sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-DIRFLG sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-DFTXT sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-XSPEC sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-DFTVAL sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-TD_ATTRIBUTES sy-vline 
WA_BUP_S_RELT_RELNR_TABIX_STR-ACT_KEYS_SUCC sy-vline      INTO ld_text SEPARATED BY SPACE.

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