ABAP Select data from SAP table RJK0501 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJK0501 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 RJK0501. 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 RJK0501 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_RJK0501 TYPE STANDARD TABLE OF RJK0501,
      WA_RJK0501 TYPE RJK0501,
      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: <RJK0501> TYPE RJK0501.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RJK0501.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RJK0501
  INTO TABLE IT_RJK0501.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJK0501
*  INTO TABLE @DATA(IT_RJK05012).
*--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_RJK0501 INDEX 1 INTO DATA(WA_RJK05012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RJK0501 ASSIGNING <RJK0501>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJK0501>-VBELN = 1.
<RJK0501>-REMMELDUNG = 1.
<RJK0501>-AUART = 1.
<RJK0501>-REMVON = 1.
<RJK0501>-REMBIS = 1.

ENDLOOP.

LOOP AT IT_RJK0501 INTO WA_RJK0501.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJK0501-POSEX, sy-vline,
  WA_RJK0501-KUNWE, sy-vline,
  WA_RJK0501-DRERZ, sy-vline,
  WA_RJK0501-PVA, sy-vline,
  WA_RJK0501-REMPER, sy-vline,
  WA_RJK0501-GESREMMG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJK0501 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_RJK0501 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_RJK0501 INTO WA_RJK0501.


*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_RJK0501-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJK0501-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REMMELDUNG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJK0501-REMMELDUNG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJK0501-REMMELDUNG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNWE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJK0501-KUNWE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJK0501-KUNWE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DRERZ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJK0501-DRERZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJK0501-DRERZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PVA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJK0501-PVA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJK0501-PVA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GESREMME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJK0501-GESREMME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJK0501-GESREMME.
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_RJK0501_STR, 
VBELN TYPE STRING,
REMMELDUNG TYPE STRING,
AUART TYPE STRING,
REMVON TYPE STRING,
REMBIS TYPE STRING,
POSEX TYPE STRING,
KUNWE TYPE STRING,
DRERZ TYPE STRING,
PVA TYPE STRING,
REMPER TYPE STRING,
GESREMMG TYPE STRING,
GESREMME TYPE STRING,
VERTLG_LIN TYPE STRING,
VERTLG_ANT TYPE STRING,
GESLIEFNG TYPE STRING,
GESTAGE TYPE STRING,
REST TYPE STRING,
ERSCHDAT TYPE STRING,
REMMG_IST TYPE STRING,
REMMGVORZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJK0501_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_RJK0501_STR-VBELN sy-vline 
WA_RJK0501_STR-REMMELDUNG sy-vline 
WA_RJK0501_STR-AUART sy-vline 
WA_RJK0501_STR-REMVON sy-vline 
WA_RJK0501_STR-REMBIS sy-vline 
WA_RJK0501_STR-POSEX sy-vline 
WA_RJK0501_STR-KUNWE sy-vline 
WA_RJK0501_STR-DRERZ sy-vline 
WA_RJK0501_STR-PVA sy-vline 
WA_RJK0501_STR-REMPER sy-vline 
WA_RJK0501_STR-GESREMMG sy-vline 
WA_RJK0501_STR-GESREMME sy-vline 
WA_RJK0501_STR-VERTLG_LIN sy-vline 
WA_RJK0501_STR-VERTLG_ANT sy-vline 
WA_RJK0501_STR-GESLIEFNG sy-vline 
WA_RJK0501_STR-GESTAGE sy-vline 
WA_RJK0501_STR-REST sy-vline 
WA_RJK0501_STR-ERSCHDAT sy-vline 
WA_RJK0501_STR-REMMG_IST sy-vline 
WA_RJK0501_STR-REMMGVORZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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