ABAP Select data from SAP table RJD0401 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJD0401 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 RJD0401. 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 RJD0401 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_RJD0401 TYPE STANDARD TABLE OF RJD0401,
      WA_RJD0401 TYPE RJD0401,
      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: <RJD0401> TYPE RJD0401.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RJD0401.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RJD0401
  INTO TABLE IT_RJD0401.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJD0401
*  INTO TABLE @DATA(IT_RJD04012).
*--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_RJD0401 INDEX 1 INTO DATA(WA_RJD04012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RJD0401 ASSIGNING <RJD0401>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJD0401>-EINZELPER = 1.
<RJD0401>-VARTYPST = 1.
<RJD0401>-VARTYPVF = 1.
<RJD0401>-VARTYPAF = 1.
<RJD0401>-VARTYPF1 = 1.

ENDLOOP.

LOOP AT IT_RJD0401 INTO WA_RJD0401.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJD0401-VARTYPF2, sy-vline,
  WA_RJD0401-MOINEIP, sy-vline,
  WA_RJD0401-WOINEIP, sy-vline,
  WA_RJD0401-TAGINEIP, sy-vline,
  WA_RJD0401-STDINEIP, sy-vline,
  WA_RJD0401-FTKOLL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJD0401 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_RJD0401 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_RJD0401 INTO WA_RJD0401.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RJD0401_STR, 
EINZELPER TYPE STRING,
VARTYPST TYPE STRING,
VARTYPVF TYPE STRING,
VARTYPAF TYPE STRING,
VARTYPF1 TYPE STRING,
VARTYPF2 TYPE STRING,
MOINEIP TYPE STRING,
WOINEIP TYPE STRING,
TAGINEIP TYPE STRING,
STDINEIP TYPE STRING,
FTKOLL TYPE STRING,
AKT_EINTR TYPE STRING,
GES_EINTR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJD0401_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_RJD0401_STR-EINZELPER sy-vline 
WA_RJD0401_STR-VARTYPST sy-vline 
WA_RJD0401_STR-VARTYPVF sy-vline 
WA_RJD0401_STR-VARTYPAF sy-vline 
WA_RJD0401_STR-VARTYPF1 sy-vline 
WA_RJD0401_STR-VARTYPF2 sy-vline 
WA_RJD0401_STR-MOINEIP sy-vline 
WA_RJD0401_STR-WOINEIP sy-vline 
WA_RJD0401_STR-TAGINEIP sy-vline 
WA_RJD0401_STR-STDINEIP sy-vline 
WA_RJD0401_STR-FTKOLL sy-vline 
WA_RJD0401_STR-AKT_EINTR sy-vline 
WA_RJD0401_STR-GES_EINTR sy-vline      INTO ld_text SEPARATED BY SPACE.

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