ABAP Select data from SAP table RBKPB_OLD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RBKPB_OLD
*  INTO TABLE @DATA(IT_RBKPB_OLD2).
*--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_RBKPB_OLD INDEX 1 INTO DATA(WA_RBKPB_OLD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RBKPB_OLD>-REPART = 1.
<RBKPB_OLD>-RBSTAT = 1.
<RBKPB_OLD>-MAKZN = 1.
<RBKPB_OLD>-XRKUE = 1.
<RBKPB_OLD>-ESRNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RBKPB_OLD-ESRPZ, sy-vline,
  WA_RBKPB_OLD-ESRRE, sy-vline,
  WA_RBKPB_OLD-QSSHB, sy-vline,
  WA_RBKPB_OLD-QSFBT, sy-vline,
  WA_RBKPB_OLD-QSSKZ, sy-vline,
  WA_RBKPB_OLD-DIEKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RBKPB_OLD 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_RBKPB_OLD 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_RBKPB_OLD INTO WA_RBKPB_OLD.


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

*Conversion exit EXCRT, internal->external for field TXKRS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_RBKPB_OLD-TXKRS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RBKPB_OLD-TXKRS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BNLIF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RBKPB_OLD-BNLIF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RBKPB_OLD-BNLIF.
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_RBKPB_OLD_STR, 
REPART TYPE STRING,
RBSTAT TYPE STRING,
MAKZN TYPE STRING,
XRKUE TYPE STRING,
ESRNR TYPE STRING,
ESRPZ TYPE STRING,
ESRRE TYPE STRING,
QSSHB TYPE STRING,
QSFBT TYPE STRING,
QSSKZ TYPE STRING,
DIEKZ TYPE STRING,
LANDL TYPE STRING,
LZBKZ TYPE STRING,
TXKRS TYPE STRING,
XAVER TYPE STRING,
KZZUORDLI TYPE STRING,
KZZUORDRT TYPE STRING,
KZBNK TYPE STRING,
RCHGART TYPE STRING,
BNLIF TYPE STRING,
LIEFF TYPE STRING,
SMWSKZ1 TYPE STRING,
SMWST1 TYPE STRING,
LIEFF1 TYPE STRING,
MWLIEFF1 TYPE STRING,
MAKZMW1 TYPE STRING,
MWDIFFB1 TYPE STRING,
FWNAV1 TYPE STRING,
MWBNK1 TYPE STRING,
SMWSKZ2 TYPE STRING,
SMWST2 TYPE STRING,
LIEFF2 TYPE STRING,
MWLIEFF2 TYPE STRING,
MAKZMW2 TYPE STRING,
MWDIFFB2 TYPE STRING,
FWNAV2 TYPE STRING,
MWBNK2 TYPE STRING,
SOLLN TYPE STRING,
SOLLB TYPE STRING,
MAKZB TYPE STRING,
LIEFFN TYPE STRING,
DIFFB TYPE STRING,
ZFBDT TYPE STRING,
MONAT TYPE STRING,
ZLSCH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RBKPB_OLD_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_RBKPB_OLD_STR-REPART sy-vline 
WA_RBKPB_OLD_STR-RBSTAT sy-vline 
WA_RBKPB_OLD_STR-MAKZN sy-vline 
WA_RBKPB_OLD_STR-XRKUE sy-vline 
WA_RBKPB_OLD_STR-ESRNR sy-vline 
WA_RBKPB_OLD_STR-ESRPZ sy-vline 
WA_RBKPB_OLD_STR-ESRRE sy-vline 
WA_RBKPB_OLD_STR-QSSHB sy-vline 
WA_RBKPB_OLD_STR-QSFBT sy-vline 
WA_RBKPB_OLD_STR-QSSKZ sy-vline 
WA_RBKPB_OLD_STR-DIEKZ sy-vline 
WA_RBKPB_OLD_STR-LANDL sy-vline 
WA_RBKPB_OLD_STR-LZBKZ sy-vline 
WA_RBKPB_OLD_STR-TXKRS sy-vline 
WA_RBKPB_OLD_STR-XAVER sy-vline 
WA_RBKPB_OLD_STR-KZZUORDLI sy-vline 
WA_RBKPB_OLD_STR-KZZUORDRT sy-vline 
WA_RBKPB_OLD_STR-KZBNK sy-vline 
WA_RBKPB_OLD_STR-RCHGART sy-vline 
WA_RBKPB_OLD_STR-BNLIF sy-vline 
WA_RBKPB_OLD_STR-LIEFF sy-vline 
WA_RBKPB_OLD_STR-SMWSKZ1 sy-vline 
WA_RBKPB_OLD_STR-SMWST1 sy-vline 
WA_RBKPB_OLD_STR-LIEFF1 sy-vline 
WA_RBKPB_OLD_STR-MWLIEFF1 sy-vline 
WA_RBKPB_OLD_STR-MAKZMW1 sy-vline 
WA_RBKPB_OLD_STR-MWDIFFB1 sy-vline 
WA_RBKPB_OLD_STR-FWNAV1 sy-vline 
WA_RBKPB_OLD_STR-MWBNK1 sy-vline 
WA_RBKPB_OLD_STR-SMWSKZ2 sy-vline 
WA_RBKPB_OLD_STR-SMWST2 sy-vline 
WA_RBKPB_OLD_STR-LIEFF2 sy-vline 
WA_RBKPB_OLD_STR-MWLIEFF2 sy-vline 
WA_RBKPB_OLD_STR-MAKZMW2 sy-vline 
WA_RBKPB_OLD_STR-MWDIFFB2 sy-vline 
WA_RBKPB_OLD_STR-FWNAV2 sy-vline 
WA_RBKPB_OLD_STR-MWBNK2 sy-vline 
WA_RBKPB_OLD_STR-SOLLN sy-vline 
WA_RBKPB_OLD_STR-SOLLB sy-vline 
WA_RBKPB_OLD_STR-MAKZB sy-vline 
WA_RBKPB_OLD_STR-LIEFFN sy-vline 
WA_RBKPB_OLD_STR-DIFFB sy-vline 
WA_RBKPB_OLD_STR-ZFBDT sy-vline 
WA_RBKPB_OLD_STR-MONAT sy-vline 
WA_RBKPB_OLD_STR-ZLSCH sy-vline      INTO ld_text SEPARATED BY SPACE.

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