ABAP Select data from SAP table RM08A 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 RM08A 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 RM08A. 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 RM08A 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_RM08A TYPE STANDARD TABLE OF RM08A,
      WA_RM08A TYPE RM08A,
      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: <RM08A> TYPE RM08A.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RM08A.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RM08A
  INTO TABLE IT_RM08A.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RM08A
*  INTO TABLE @DATA(IT_RM08A2).
*--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_RM08A INDEX 1 INTO DATA(WA_RM08A2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RM08A ASSIGNING <RM08A>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RM08A>-ACTIV = 1.
<RM08A>-BBELNR = 1.
<RM08A>-BELNR = 1.
<RM08A>-BLART = 1.
<RM08A>-BPRME = 1.

ENDLOOP.

LOOP AT IT_RM08A INTO WA_RM08A.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RM08A-BUDAT, sy-vline,
  WA_RM08A-BUKRS, sy-vline,
  WA_RM08A-BUZEI, sy-vline,
  WA_RM08A-DMBTR, sy-vline,
  WA_RM08A-DMENG, sy-vline,
  WA_RM08A-DTAGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RM08A 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_RM08A 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_RM08A INTO WA_RM08A.


*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 BBELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RM08A-BBELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM08A-BBELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RM08A-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM08A-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BPRME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RM08A-BPRME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM08A-BPRME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RM08A-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM08A-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RM08A-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM08A-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LFBNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RM08A-LFBNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM08A-LFBNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field LFGJA
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RM08A-LFGJA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM08A-LFGJA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RM08A-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM08A-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RM08A-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM08A-MEINS.
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_RM08A_STR, 
ACTIV TYPE STRING,
BBELNR TYPE STRING,
BELNR TYPE STRING,
BLART TYPE STRING,
BPRME TYPE STRING,
BUDAT TYPE STRING,
BUKRS TYPE STRING,
BUZEI TYPE STRING,
DMBTR TYPE STRING,
DMENG TYPE STRING,
DTAGE TYPE STRING,
DWERT TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
EKGRP TYPE STRING,
GJAHR TYPE STRING,
KBUZEI TYPE STRING,
KOART TYPE STRING,
KONTO TYPE STRING,
LFBNR TYPE STRING,
LFGJA TYPE STRING,
LFPOS TYPE STRING,
LIFNR TYPE STRING,
MEINS TYPE STRING,
MONAT TYPE STRING,
NAME1 TYPE STRING,
SPGRM TYPE STRING,
SPGRP TYPE STRING,
SPGRT TYPE STRING,
SPGRQ TYPE STRING,
SPGRV TYPE STRING,
SPGRG TYPE STRING,
SPGRS TYPE STRING,
SPGRC TYPE STRING,
SSQSS TYPE STRING,
XAEND TYPE STRING,
UPOSN TYPE STRING,
WAERS TYPE STRING,
WEBRE TYPE STRING,
WRBTR TYPE STRING,
ZFBDT TYPE STRING,
ZLSPR TYPE STRING,
ZTERM TYPE STRING,
ZUONR TYPE STRING,
SGTXT TYPE STRING,
BVTYP TYPE STRING,
RTSGR TYPE STRING,
KLTBT TYPE STRING,
J_1NK TYPE STRING,
J_1NK_NEW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RM08A_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_RM08A_STR-ACTIV sy-vline 
WA_RM08A_STR-BBELNR sy-vline 
WA_RM08A_STR-BELNR sy-vline 
WA_RM08A_STR-BLART sy-vline 
WA_RM08A_STR-BPRME sy-vline 
WA_RM08A_STR-BUDAT sy-vline 
WA_RM08A_STR-BUKRS sy-vline 
WA_RM08A_STR-BUZEI sy-vline 
WA_RM08A_STR-DMBTR sy-vline 
WA_RM08A_STR-DMENG sy-vline 
WA_RM08A_STR-DTAGE sy-vline 
WA_RM08A_STR-DWERT sy-vline 
WA_RM08A_STR-EBELN sy-vline 
WA_RM08A_STR-EBELP sy-vline 
WA_RM08A_STR-EKGRP sy-vline 
WA_RM08A_STR-GJAHR sy-vline 
WA_RM08A_STR-KBUZEI sy-vline 
WA_RM08A_STR-KOART sy-vline 
WA_RM08A_STR-KONTO sy-vline 
WA_RM08A_STR-LFBNR sy-vline 
WA_RM08A_STR-LFGJA sy-vline 
WA_RM08A_STR-LFPOS sy-vline 
WA_RM08A_STR-LIFNR sy-vline 
WA_RM08A_STR-MEINS sy-vline 
WA_RM08A_STR-MONAT sy-vline 
WA_RM08A_STR-NAME1 sy-vline 
WA_RM08A_STR-SPGRM sy-vline 
WA_RM08A_STR-SPGRP sy-vline 
WA_RM08A_STR-SPGRT sy-vline 
WA_RM08A_STR-SPGRQ sy-vline 
WA_RM08A_STR-SPGRV sy-vline 
WA_RM08A_STR-SPGRG sy-vline 
WA_RM08A_STR-SPGRS sy-vline 
WA_RM08A_STR-SPGRC sy-vline 
WA_RM08A_STR-SSQSS sy-vline 
WA_RM08A_STR-XAEND sy-vline 
WA_RM08A_STR-UPOSN sy-vline 
WA_RM08A_STR-WAERS sy-vline 
WA_RM08A_STR-WEBRE sy-vline 
WA_RM08A_STR-WRBTR sy-vline 
WA_RM08A_STR-ZFBDT sy-vline 
WA_RM08A_STR-ZLSPR sy-vline 
WA_RM08A_STR-ZTERM sy-vline 
WA_RM08A_STR-ZUONR sy-vline 
WA_RM08A_STR-SGTXT sy-vline 
WA_RM08A_STR-BVTYP sy-vline 
WA_RM08A_STR-RTSGR sy-vline 
WA_RM08A_STR-KLTBT sy-vline 
WA_RM08A_STR-J_1NK sy-vline 
WA_RM08A_STR-J_1NK_NEW sy-vline      INTO ld_text SEPARATED BY SPACE.

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