ABAP Select data from SAP table RL02B into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RL02B 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 RL02B. 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 RL02B 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_RL02B TYPE STANDARD TABLE OF RL02B,
      WA_RL02B TYPE RL02B,
      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: <RL02B> TYPE RL02B.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RL02B.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RL02B
  INTO TABLE IT_RL02B.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RL02B
*  INTO TABLE @DATA(IT_RL02B2).
*--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_RL02B INDEX 1 INTO DATA(WA_RL02B2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RL02B ASSIGNING <RL02B>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RL02B>-OFMEN = 1.
<RL02B>-OFMEA = 1.
<RL02B>-ABLAD = 1.
<RL02B>-WEMPF = 1.
<RL02B>-SOBKZ = 1.

ENDLOOP.

LOOP AT IT_RL02B INTO WA_RL02B.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RL02B-SONUM, sy-vline,
  WA_RL02B-WERKS, sy-vline,
  WA_RL02B-LGORT, sy-vline,
  WA_RL02B-CHARG, sy-vline,
  WA_RL02B-BESTQ, sy-vline,
  WA_RL02B-LGNUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RL02B 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_RL02B 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_RL02B INTO WA_RL02B.


*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 SONUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RL02B-SONUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL02B-SONUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BENUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RL02B-BENUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL02B-BENUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RL02B-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL02B-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RL02B-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL02B-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RL02B-MBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL02B-MBLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RL02B-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL02B-MJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field QPLOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RL02B-QPLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL02B-QPLOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WENUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RL02B-WENUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL02B-WENUM.
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_RL02B_STR, 
OFMEN TYPE STRING,
OFMEA TYPE STRING,
ABLAD TYPE STRING,
WEMPF TYPE STRING,
SOBKZ TYPE STRING,
SONUM TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
BESTQ TYPE STRING,
LGNUM TYPE STRING,
TBPRI TYPE STRING,
PDABI TYPE STRING,
PDAAB TYPE STRING,
PZEBI TYPE STRING,
PZEAB TYPE STRING,
BETYP TYPE STRING,
BENUM TYPE STRING,
VLTYP TYPE STRING,
VLPLA TYPE STRING,
NLTYP TYPE STRING,
NLPLA TYPE STRING,
TRART TYPE STRING,
STATO TYPE STRING,
STATT TYPE STRING,
STATE TYPE STRING,
AUTFR TYPE STRING,
AUTTA TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
ELIKZ TYPE STRING,
TAVOR TYPE STRING,
FCODE TYPE STRING,
OFMA1 TYPE STRING,
MEINS TYPE STRING,
BWLVS TYPE STRING,
STATU TYPE STRING,
DUNKL TYPE STRING,
MBLNR TYPE STRING,
MJAHR TYPE STRING,
MBPOS TYPE STRING,
USTAO TYPE STRING,
USTAT TYPE STRING,
USTAE TYPE STRING,
QPLOS TYPE STRING,
WENUM TYPE STRING,
OFFMG TYPE STRING,
VERMG TYPE STRING,
LSONR TYPE STRING,
LSON1 TYPE STRING,
LSON2 TYPE STRING,
LZNUM TYPE STRING,
MARKI TYPE STRING,
DIRTA TYPE STRING,
LISTV TYPE STRING,
SGT_SCAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RL02B_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_RL02B_STR-OFMEN sy-vline 
WA_RL02B_STR-OFMEA sy-vline 
WA_RL02B_STR-ABLAD sy-vline 
WA_RL02B_STR-WEMPF sy-vline 
WA_RL02B_STR-SOBKZ sy-vline 
WA_RL02B_STR-SONUM sy-vline 
WA_RL02B_STR-WERKS sy-vline 
WA_RL02B_STR-LGORT sy-vline 
WA_RL02B_STR-CHARG sy-vline 
WA_RL02B_STR-BESTQ sy-vline 
WA_RL02B_STR-LGNUM sy-vline 
WA_RL02B_STR-TBPRI sy-vline 
WA_RL02B_STR-PDABI sy-vline 
WA_RL02B_STR-PDAAB sy-vline 
WA_RL02B_STR-PZEBI sy-vline 
WA_RL02B_STR-PZEAB sy-vline 
WA_RL02B_STR-BETYP sy-vline 
WA_RL02B_STR-BENUM sy-vline 
WA_RL02B_STR-VLTYP sy-vline 
WA_RL02B_STR-VLPLA sy-vline 
WA_RL02B_STR-NLTYP sy-vline 
WA_RL02B_STR-NLPLA sy-vline 
WA_RL02B_STR-TRART sy-vline 
WA_RL02B_STR-STATO sy-vline 
WA_RL02B_STR-STATT sy-vline 
WA_RL02B_STR-STATE sy-vline 
WA_RL02B_STR-AUTFR sy-vline 
WA_RL02B_STR-AUTTA sy-vline 
WA_RL02B_STR-MATNR sy-vline 
WA_RL02B_STR-MAKTX sy-vline 
WA_RL02B_STR-ELIKZ sy-vline 
WA_RL02B_STR-TAVOR sy-vline 
WA_RL02B_STR-FCODE sy-vline 
WA_RL02B_STR-OFMA1 sy-vline 
WA_RL02B_STR-MEINS sy-vline 
WA_RL02B_STR-BWLVS sy-vline 
WA_RL02B_STR-STATU sy-vline 
WA_RL02B_STR-DUNKL sy-vline 
WA_RL02B_STR-MBLNR sy-vline 
WA_RL02B_STR-MJAHR sy-vline 
WA_RL02B_STR-MBPOS sy-vline 
WA_RL02B_STR-USTAO sy-vline 
WA_RL02B_STR-USTAT sy-vline 
WA_RL02B_STR-USTAE sy-vline 
WA_RL02B_STR-QPLOS sy-vline 
WA_RL02B_STR-WENUM sy-vline 
WA_RL02B_STR-OFFMG sy-vline 
WA_RL02B_STR-VERMG sy-vline 
WA_RL02B_STR-LSONR sy-vline 
WA_RL02B_STR-LSON1 sy-vline 
WA_RL02B_STR-LSON2 sy-vline 
WA_RL02B_STR-LZNUM sy-vline 
WA_RL02B_STR-MARKI sy-vline 
WA_RL02B_STR-DIRTA sy-vline 
WA_RL02B_STR-LISTV sy-vline 
WA_RL02B_STR-SGT_SCAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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