ABAP Select data from SAP table RIWO03 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RIWO03 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 RIWO03. 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 RIWO03 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_RIWO03 TYPE STANDARD TABLE OF RIWO03,
      WA_RIWO03 TYPE RIWO03,
      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: <RIWO03> TYPE RIWO03.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RIWO03.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RIWO03
  INTO TABLE IT_RIWO03.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RIWO03
*  INTO TABLE @DATA(IT_RIWO032).
*--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_RIWO03 INDEX 1 INTO DATA(WA_RIWO032).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RIWO03 ASSIGNING <RIWO03>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RIWO03>-BAUTX = 1.
<RIWO03>-EQTXT = 1.
<RIWO03>-PLTXT = 1.
<RIWO03>-TXTGRSA = 1.
<RIWO03>-TXTCDSA = 1.

ENDLOOP.

LOOP AT IT_RIWO03 INTO WA_RIWO03.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RIWO03-TXTCDQM, sy-vline,
  WA_RIWO03-BUNAME, sy-vline,
  WA_RIWO03-HRNAME1, sy-vline,
  WA_RIWO03-LFNAME1, sy-vline,
  WA_RIWO03-KUNAME1, sy-vline,
  WA_RIWO03-MATKTX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RIWO03 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_RIWO03 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_RIWO03 INTO WA_RIWO03.


*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 NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RIWO03-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIWO03-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field FERTVORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RIWO03-FERTVORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIWO03-FERTVORNR.
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_RIWO03_STR, 
BAUTX TYPE STRING,
EQTXT TYPE STRING,
PLTXT TYPE STRING,
TXTGRSA TYPE STRING,
TXTCDSA TYPE STRING,
TXTCDQM TYPE STRING,
BUNAME TYPE STRING,
HRNAME1 TYPE STRING,
LFNAME1 TYPE STRING,
KUNAME1 TYPE STRING,
MATKTX TYPE STRING,
VKOTX TYPE STRING,
VTWEGTX TYPE STRING,
SPARTTX TYPE STRING,
EKOTX TYPE STRING,
EKNAM TYPE STRING,
ARBPL TYPE STRING,
ARBPLTX TYPE STRING,
VORNR TYPE STRING,
VORKTEXT TYPE STRING,
FEARTTEXT TYPE STRING,
FERTVORNR TYPE STRING,
FERTVORKTX TYPE STRING,
XCHPF TYPE STRING,
SERNP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RIWO03_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_RIWO03_STR-BAUTX sy-vline 
WA_RIWO03_STR-EQTXT sy-vline 
WA_RIWO03_STR-PLTXT sy-vline 
WA_RIWO03_STR-TXTGRSA sy-vline 
WA_RIWO03_STR-TXTCDSA sy-vline 
WA_RIWO03_STR-TXTCDQM sy-vline 
WA_RIWO03_STR-BUNAME sy-vline 
WA_RIWO03_STR-HRNAME1 sy-vline 
WA_RIWO03_STR-LFNAME1 sy-vline 
WA_RIWO03_STR-KUNAME1 sy-vline 
WA_RIWO03_STR-MATKTX sy-vline 
WA_RIWO03_STR-VKOTX sy-vline 
WA_RIWO03_STR-VTWEGTX sy-vline 
WA_RIWO03_STR-SPARTTX sy-vline 
WA_RIWO03_STR-EKOTX sy-vline 
WA_RIWO03_STR-EKNAM sy-vline 
WA_RIWO03_STR-ARBPL sy-vline 
WA_RIWO03_STR-ARBPLTX sy-vline 
WA_RIWO03_STR-VORNR sy-vline 
WA_RIWO03_STR-VORKTEXT sy-vline 
WA_RIWO03_STR-FEARTTEXT sy-vline 
WA_RIWO03_STR-FERTVORNR sy-vline 
WA_RIWO03_STR-FERTVORKTX sy-vline 
WA_RIWO03_STR-XCHPF sy-vline 
WA_RIWO03_STR-SERNP sy-vline      INTO ld_text SEPARATED BY SPACE.

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