ABAP Select data from SAP table RJLV25 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJLV25 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 RJLV25. 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 RJLV25 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_RJLV25 TYPE STANDARD TABLE OF RJLV25,
      WA_RJLV25 TYPE RJLV25,
      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: <RJLV25> TYPE RJLV25.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RJLV25.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RJLV25
  INTO TABLE IT_RJLV25.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJLV25
*  INTO TABLE @DATA(IT_RJLV252).
*--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_RJLV25 INDEX 1 INTO DATA(WA_RJLV252).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RJLV25 ASSIGNING <RJLV25>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJLV25>-TEXT001 = 1.
<RJLV25>-TEXT002 = 1.
<RJLV25>-TEXT003 = 1.
<RJLV25>-TEXT004 = 1.
<RJLV25>-TEXT031 = 1.

ENDLOOP.

LOOP AT IT_RJLV25 INTO WA_RJLV25.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJLV25-TEXT032, sy-vline,
  WA_RJLV25-TEXT033, sy-vline,
  WA_RJLV25-TEXT034, sy-vline,
  WA_RJLV25-TEXT035, sy-vline,
  WA_RJLV25-TEXT036, sy-vline,
  WA_RJLV25-NUM_INTERN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJLV25 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_RJLV25 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_RJLV25 INTO WA_RJLV25.


*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_RJLV25_STR, 
TEXT001 TYPE STRING,
TEXT002 TYPE STRING,
TEXT003 TYPE STRING,
TEXT004 TYPE STRING,
TEXT031 TYPE STRING,
TEXT032 TYPE STRING,
TEXT033 TYPE STRING,
TEXT034 TYPE STRING,
TEXT035 TYPE STRING,
TEXT036 TYPE STRING,
NUM_INTERN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJLV25_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_RJLV25_STR-TEXT001 sy-vline 
WA_RJLV25_STR-TEXT002 sy-vline 
WA_RJLV25_STR-TEXT003 sy-vline 
WA_RJLV25_STR-TEXT004 sy-vline 
WA_RJLV25_STR-TEXT031 sy-vline 
WA_RJLV25_STR-TEXT032 sy-vline 
WA_RJLV25_STR-TEXT033 sy-vline 
WA_RJLV25_STR-TEXT034 sy-vline 
WA_RJLV25_STR-TEXT035 sy-vline 
WA_RJLV25_STR-TEXT036 sy-vline 
WA_RJLV25_STR-NUM_INTERN sy-vline      INTO ld_text SEPARATED BY SPACE.

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