ABAP Select data from SAP table RJKWWW03 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJKWWW03 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 RJKWWW03. 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 RJKWWW03 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_RJKWWW03 TYPE STANDARD TABLE OF RJKWWW03,
      WA_RJKWWW03 TYPE RJKWWW03,
      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: <RJKWWW03> TYPE RJKWWW03.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RJKWWW03.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RJKWWW03
  INTO TABLE IT_RJKWWW03.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJKWWW03
*  INTO TABLE @DATA(IT_RJKWWW032).
*--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_RJKWWW03 INDEX 1 INTO DATA(WA_RJKWWW032).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RJKWWW03 ASSIGNING <RJKWWW03>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJKWWW03>-POART = 1.
<RJKWWW03>-AEART = 1.
<RJKWWW03>-GUELTIGVON = 1.
<RJKWWW03>-GUELTIGBIS = 1.
<RJKWWW03>-UNTBRGRD = 1.

ENDLOOP.

LOOP AT IT_RJKWWW03 INTO WA_RJKWWW03.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJKWWW03-PVA, sy-vline,
  WA_RJKWWW03-BEZUGSTYP, sy-vline,
  WA_RJKWWW03-LIEFERART, sy-vline,
  WA_RJKWWW03-BEZUGGRD, sy-vline,
  WA_RJKWWW03-ETMENGE, sy-vline,
  WA_RJKWWW03-KUNWE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJKWWW03 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_RJKWWW03 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_RJKWWW03 INTO WA_RJKWWW03.


*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 PVA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKWWW03-PVA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKWWW03-PVA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNWE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKWWW03-KUNWE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKWWW03-KUNWE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADRNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKWWW03-ADRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKWWW03-ADRNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KEY_VACATION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKWWW03-KEY_VACATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKWWW03-KEY_VACATION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MCAMP, internal->external for field MARKETING_CAMP
CALL FUNCTION 'CONVERSION_EXIT_MCAMP_OUTPUT'
  EXPORTING
    input =                      WA_RJKWWW03-MARKETING_CAMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKWWW03-MARKETING_CAMP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field JKTOKD_WE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKWWW03-JKTOKD_WE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKWWW03-JKTOKD_WE.
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_RJKWWW03_STR, 
POART TYPE STRING,
AEART TYPE STRING,
GUELTIGVON TYPE STRING,
GUELTIGBIS TYPE STRING,
UNTBRGRD TYPE STRING,
PVA TYPE STRING,
BEZUGSTYP TYPE STRING,
LIEFERART TYPE STRING,
BEZUGGRD TYPE STRING,
ETMENGE TYPE STRING,
KUNWE TYPE STRING,
LOGADR TYPE STRING,
ADRNR TYPE STRING,
ADRESSVAR TYPE STRING,
KEY_VACATION TYPE STRING,
COUNTER TYPE STRING,
LAND1_INIT TYPE STRING,
MARKETING_CAMP TYPE STRING,
JKTOKD_WE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJKWWW03_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_RJKWWW03_STR-POART sy-vline 
WA_RJKWWW03_STR-AEART sy-vline 
WA_RJKWWW03_STR-GUELTIGVON sy-vline 
WA_RJKWWW03_STR-GUELTIGBIS sy-vline 
WA_RJKWWW03_STR-UNTBRGRD sy-vline 
WA_RJKWWW03_STR-PVA sy-vline 
WA_RJKWWW03_STR-BEZUGSTYP sy-vline 
WA_RJKWWW03_STR-LIEFERART sy-vline 
WA_RJKWWW03_STR-BEZUGGRD sy-vline 
WA_RJKWWW03_STR-ETMENGE sy-vline 
WA_RJKWWW03_STR-KUNWE sy-vline 
WA_RJKWWW03_STR-LOGADR sy-vline 
WA_RJKWWW03_STR-ADRNR sy-vline 
WA_RJKWWW03_STR-ADRESSVAR sy-vline 
WA_RJKWWW03_STR-KEY_VACATION sy-vline 
WA_RJKWWW03_STR-COUNTER sy-vline 
WA_RJKWWW03_STR-LAND1_INIT sy-vline 
WA_RJKWWW03_STR-MARKETING_CAMP sy-vline 
WA_RJKWWW03_STR-JKTOKD_WE sy-vline      INTO ld_text SEPARATED BY SPACE.

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