ABAP Select data from SAP table RJKAKPR into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJKAKPR 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 RJKAKPR. 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 RJKAKPR 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_RJKAKPR TYPE STANDARD TABLE OF RJKAKPR,
      WA_RJKAKPR TYPE RJKAKPR,
      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: <RJKAKPR> TYPE RJKAKPR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJKAKPR
*  INTO TABLE @DATA(IT_RJKAKPR2).
*--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_RJKAKPR INDEX 1 INTO DATA(WA_RJKAKPR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJKAKPR>-MANDT = 1.
<RJKAKPR>-VBELN = 1.
<RJKAKPR>-XBEILAGE = 1.
<RJKAKPR>-XVERTEILNG = 1.
<RJKAKPR>-GPAG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJKAKPR-VKORG, sy-vline,
  WA_RJKAKPR-VTWEG, sy-vline,
  WA_RJKAKPR-SPART, sy-vline,
  WA_RJKAKPR-WERKS, sy-vline,
  WA_RJKAKPR-BSTNK, sy-vline,
  WA_RJKAKPR-BSARK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJKAKPR 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_RJKAKPR 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_RJKAKPR INTO WA_RJKAKPR.


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

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

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

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJKAKPR-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKAKPR-MEINH.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field MEINBEZSUM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJKAKPR-MEINBEZSUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKAKPR-MEINBEZSUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINDISP
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJKAKPR-MEINDISP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKAKPR-MEINDISP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINLIEFPL
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJKAKPR-MEINLIEFPL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKAKPR-MEINLIEFPL.
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_RJKAKPR_STR, 
MANDT TYPE STRING,
VBELN TYPE STRING,
XBEILAGE TYPE STRING,
XVERTEILNG TYPE STRING,
GPAG TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
WERKS TYPE STRING,
BSTNK TYPE STRING,
BSARK TYPE STRING,
BSTDK TYPE STRING,
BSTZD TYPE STRING,
IHREZ TYPE STRING,
BNAME TYPE STRING,
TELF1 TYPE STRING,
XGEBUCHT TYPE STRING,
XRESRVIERT TYPE STRING,
XFRBPO TYPE STRING,
REFNR TYPE STRING,
VAUSGB_PRO TYPE STRING,
LIEFMNGWU TYPE STRING,
MEINH TYPE STRING,
LIEFMNGPL TYPE STRING,
TEXT1 TYPE STRING,
TEXT2 TYPE STRING,
TEXT3 TYPE STRING,
POSNR_LAST TYPE STRING,
ERFUSER TYPE STRING,
ERFDATE TYPE STRING,
ERFTIME TYPE STRING,
AENUSER TYPE STRING,
AENDATE TYPE STRING,
AENTIME TYPE STRING,
DRERZ_PRO TYPE STRING,
PVA_PRO TYPE STRING,
ERSCHDAT_P TYPE STRING,
BEZEI10 TYPE STRING,
BEZIRKSUM TYPE STRING,
MEINBEZSUM TYPE STRING,
DISPMNGAKT TYPE STRING,
MEINDISP TYPE STRING,
MEINLIEFPL TYPE STRING,
XROUPVAZUO TYPE STRING,
XPACKREGEL TYPE STRING,
DBCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJKAKPR_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_RJKAKPR_STR-MANDT sy-vline 
WA_RJKAKPR_STR-VBELN sy-vline 
WA_RJKAKPR_STR-XBEILAGE sy-vline 
WA_RJKAKPR_STR-XVERTEILNG sy-vline 
WA_RJKAKPR_STR-GPAG sy-vline 
WA_RJKAKPR_STR-VKORG sy-vline 
WA_RJKAKPR_STR-VTWEG sy-vline 
WA_RJKAKPR_STR-SPART sy-vline 
WA_RJKAKPR_STR-WERKS sy-vline 
WA_RJKAKPR_STR-BSTNK sy-vline 
WA_RJKAKPR_STR-BSARK sy-vline 
WA_RJKAKPR_STR-BSTDK sy-vline 
WA_RJKAKPR_STR-BSTZD sy-vline 
WA_RJKAKPR_STR-IHREZ sy-vline 
WA_RJKAKPR_STR-BNAME sy-vline 
WA_RJKAKPR_STR-TELF1 sy-vline 
WA_RJKAKPR_STR-XGEBUCHT sy-vline 
WA_RJKAKPR_STR-XRESRVIERT sy-vline 
WA_RJKAKPR_STR-XFRBPO sy-vline 
WA_RJKAKPR_STR-REFNR sy-vline 
WA_RJKAKPR_STR-VAUSGB_PRO sy-vline 
WA_RJKAKPR_STR-LIEFMNGWU sy-vline 
WA_RJKAKPR_STR-MEINH sy-vline 
WA_RJKAKPR_STR-LIEFMNGPL sy-vline 
WA_RJKAKPR_STR-TEXT1 sy-vline 
WA_RJKAKPR_STR-TEXT2 sy-vline 
WA_RJKAKPR_STR-TEXT3 sy-vline 
WA_RJKAKPR_STR-POSNR_LAST sy-vline 
WA_RJKAKPR_STR-ERFUSER sy-vline 
WA_RJKAKPR_STR-ERFDATE sy-vline 
WA_RJKAKPR_STR-ERFTIME sy-vline 
WA_RJKAKPR_STR-AENUSER sy-vline 
WA_RJKAKPR_STR-AENDATE sy-vline 
WA_RJKAKPR_STR-AENTIME sy-vline 
WA_RJKAKPR_STR-DRERZ_PRO sy-vline 
WA_RJKAKPR_STR-PVA_PRO sy-vline 
WA_RJKAKPR_STR-ERSCHDAT_P sy-vline 
WA_RJKAKPR_STR-BEZEI10 sy-vline 
WA_RJKAKPR_STR-BEZIRKSUM sy-vline 
WA_RJKAKPR_STR-MEINBEZSUM sy-vline 
WA_RJKAKPR_STR-DISPMNGAKT sy-vline 
WA_RJKAKPR_STR-MEINDISP sy-vline 
WA_RJKAKPR_STR-MEINLIEFPL sy-vline 
WA_RJKAKPR_STR-XROUPVAZUO sy-vline 
WA_RJKAKPR_STR-XPACKREGEL sy-vline 
WA_RJKAKPR_STR-DBCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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