ABAP Select data from SAP table RJK13O into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJK13O 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 RJK13O. 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 RJK13O 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_RJK13O TYPE STANDARD TABLE OF RJK13O,
      WA_RJK13O TYPE RJK13O,
      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: <RJK13O> TYPE RJK13O.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RJK13O.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RJK13O
  INTO TABLE IT_RJK13O.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJK13O
*  INTO TABLE @DATA(IT_RJK13O2).
*--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_RJK13O INDEX 1 INTO DATA(WA_RJK13O2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RJK13O ASSIGNING <RJK13O>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJK13O>-VBELN_OFFER = 1.
<RJK13O>-POSNR_OFFER = 1.
<RJK13O>-POSEX_OFFER = 1.
<RJK13O>-OFFER_PRICE = 1.
<RJK13O>-OFFER_WAERK = 1.

ENDLOOP.

LOOP AT IT_RJK13O INTO WA_RJK13O.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJK13O-BEZPER, sy-vline,
  WA_RJK13O-RCODE, sy-vline,
  WA_RJK13O-PERFK, sy-vline,
  WA_RJK13O-FKPER, sy-vline,
  WA_RJK13O-KONDA, sy-vline,
  WA_RJK13O-WERBEART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJK13O 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_RJK13O 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_RJK13O INTO WA_RJK13O.


*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_OFFER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJK13O-VBELN_OFFER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJK13O-VBELN_OFFER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WERBEART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJK13O-WERBEART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJK13O-WERBEART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WERBEAKT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJK13O-WERBEAKT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJK13O-WERBEAKT.
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_RJK13O_STR, 
VBELN_OFFER TYPE STRING,
POSNR_OFFER TYPE STRING,
POSEX_OFFER TYPE STRING,
OFFER_PRICE TYPE STRING,
OFFER_WAERK TYPE STRING,
BEZPER TYPE STRING,
RCODE TYPE STRING,
PERFK TYPE STRING,
FKPER TYPE STRING,
KONDA TYPE STRING,
WERBEART TYPE STRING,
WERBEAKT TYPE STRING,
GW_PRICE TYPE STRING,
OFF_DETAIL TYPE STRING,
OFF_ACCEPT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJK13O_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_RJK13O_STR-VBELN_OFFER sy-vline 
WA_RJK13O_STR-POSNR_OFFER sy-vline 
WA_RJK13O_STR-POSEX_OFFER sy-vline 
WA_RJK13O_STR-OFFER_PRICE sy-vline 
WA_RJK13O_STR-OFFER_WAERK sy-vline 
WA_RJK13O_STR-BEZPER sy-vline 
WA_RJK13O_STR-RCODE sy-vline 
WA_RJK13O_STR-PERFK sy-vline 
WA_RJK13O_STR-FKPER sy-vline 
WA_RJK13O_STR-KONDA sy-vline 
WA_RJK13O_STR-WERBEART sy-vline 
WA_RJK13O_STR-WERBEAKT sy-vline 
WA_RJK13O_STR-GW_PRICE sy-vline 
WA_RJK13O_STR-OFF_DETAIL sy-vline 
WA_RJK13O_STR-OFF_ACCEPT sy-vline      INTO ld_text SEPARATED BY SPACE.

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