ABAP Select data from SAP table RJK04 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJK04 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 RJK04. 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 RJK04 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_RJK04 TYPE STANDARD TABLE OF RJK04,
      WA_RJK04 TYPE RJK04,
      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: <RJK04> TYPE RJK04.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RJK04.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RJK04
  INTO TABLE IT_RJK04.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJK04
*  INTO TABLE @DATA(IT_RJK042).
*--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_RJK04 INDEX 1 INTO DATA(WA_RJK042).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RJK04 ASSIGNING <RJK04>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJK04>-TEXT090 = 1.
<RJK04>-TEXT091 = 1.
<RJK04>-TEXT092 = 1.
<RJK04>-TEXT093 = 1.
<RJK04>-TEXT094 = 1.

ENDLOOP.

LOOP AT IT_RJK04 INTO WA_RJK04.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJK04-TEXT095, sy-vline,
  WA_RJK04-TEXT096, sy-vline,
  WA_RJK04-TEXT097, sy-vline,
  WA_RJK04-TEXT098, sy-vline,
  WA_RJK04-TEXT099, sy-vline,
  WA_RJK04-TEXT100, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJK04 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_RJK04 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_RJK04 INTO WA_RJK04.


*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_RJK04_STR, 
TEXT090 TYPE STRING,
TEXT091 TYPE STRING,
TEXT092 TYPE STRING,
TEXT093 TYPE STRING,
TEXT094 TYPE STRING,
TEXT095 TYPE STRING,
TEXT096 TYPE STRING,
TEXT097 TYPE STRING,
TEXT098 TYPE STRING,
TEXT099 TYPE STRING,
TEXT100 TYPE STRING,
TEXT101 TYPE STRING,
TEXT102 TYPE STRING,
TEXT103 TYPE STRING,
TEXT104 TYPE STRING,
TEXT105 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJK04_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_RJK04_STR-TEXT090 sy-vline 
WA_RJK04_STR-TEXT091 sy-vline 
WA_RJK04_STR-TEXT092 sy-vline 
WA_RJK04_STR-TEXT093 sy-vline 
WA_RJK04_STR-TEXT094 sy-vline 
WA_RJK04_STR-TEXT095 sy-vline 
WA_RJK04_STR-TEXT096 sy-vline 
WA_RJK04_STR-TEXT097 sy-vline 
WA_RJK04_STR-TEXT098 sy-vline 
WA_RJK04_STR-TEXT099 sy-vline 
WA_RJK04_STR-TEXT100 sy-vline 
WA_RJK04_STR-TEXT101 sy-vline 
WA_RJK04_STR-TEXT102 sy-vline 
WA_RJK04_STR-TEXT103 sy-vline 
WA_RJK04_STR-TEXT104 sy-vline 
WA_RJK04_STR-TEXT105 sy-vline      INTO ld_text SEPARATED BY SPACE.

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