ABAP Select data from SAP table RIWO1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RIWO1 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 RIWO1. 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 RIWO1 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_RIWO1 TYPE STANDARD TABLE OF RIWO1,
      WA_RIWO1 TYPE RIWO1,
      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: <RIWO1> TYPE RIWO1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RIWO1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RIWO1
  INTO TABLE IT_RIWO1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RIWO1
*  INTO TABLE @DATA(IT_RIWO12).
*--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_RIWO1 INDEX 1 INTO DATA(WA_RIWO12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RIWO1 ASSIGNING <RIWO1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RIWO1>-MANDT = 1.
<RIWO1>-OBJNR = 1.
<RIWO1>-TPLNR = 1.
<RIWO1>-PLTXT = 1.
<RIWO1>-EQUNR = 1.

ENDLOOP.

LOOP AT IT_RIWO1 INTO WA_RIWO1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RIWO1-EQTXT, sy-vline,
  WA_RIWO1-BAUTL, sy-vline,
  WA_RIWO1-BAUTX, sy-vline,
  WA_RIWO1-ILOAN, sy-vline,
  WA_RIWO1-ILOAI, sy-vline,
  WA_RIWO1-ILOAK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RIWO1 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_RIWO1 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_RIWO1 INTO WA_RIWO1.


*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 TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_RIWO1-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIWO1-TPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RIWO1-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIWO1-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field BAUTL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RIWO1-BAUTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIWO1-BAUTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RIWO1-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIWO1-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field SERIALNR
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_RIWO1-SERIALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIWO1-SERIALNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PHYNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RIWO1-PHYNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIWO1-PHYNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRUEFLOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RIWO1-PRUEFLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIWO1-PRUEFLOS.
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_RIWO1_STR, 
MANDT TYPE STRING,
OBJNR TYPE STRING,
TPLNR TYPE STRING,
PLTXT TYPE STRING,
EQUNR TYPE STRING,
EQTXT TYPE STRING,
BAUTL TYPE STRING,
BAUTX TYPE STRING,
ILOAN TYPE STRING,
ILOAI TYPE STRING,
ILOAK TYPE STRING,
SINIT TYPE STRING,
ILOAC TYPE STRING,
MTYPO TYPE STRING,
AKTYP TYPE STRING,
VROBJ TYPE STRING,
VRBGR TYPE STRING,
SRTCD TYPE STRING,
SDATE TYPE STRING,
SMODE TYPE STRING,
SMSGT TYPE STRING,
IWERK TYPE STRING,
INGRP TYPE STRING,
SZEIT TYPE STRING,
CURSO TYPE STRING,
NROBJ TYPE STRING,
AEKNZ TYPE STRING,
BEZDT TYPE STRING,
BRZUR TYPE STRING,
INFO_WIND TYPE STRING,
SERVICE TYPE STRING,
PANEL TYPE STRING,
AGIDV TYPE STRING,
CUSCR TYPE STRING,
OWNER TYPE STRING,
CLNOT TYPE STRING,
CHKAT TYPE STRING,
VRGNG TYPE STRING,
MATNR TYPE STRING,
MATKTX TYPE STRING,
SERIALNR TYPE STRING,
FLGSER TYPE STRING,
DEVICEID TYPE STRING,
PHYNR TYPE STRING,
KTEXT TYPE STRING,
PRUEFLOS TYPE STRING,
TCODE TYPE STRING,
QMART TYPE STRING,
UII TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RIWO1_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_RIWO1_STR-MANDT sy-vline 
WA_RIWO1_STR-OBJNR sy-vline 
WA_RIWO1_STR-TPLNR sy-vline 
WA_RIWO1_STR-PLTXT sy-vline 
WA_RIWO1_STR-EQUNR sy-vline 
WA_RIWO1_STR-EQTXT sy-vline 
WA_RIWO1_STR-BAUTL sy-vline 
WA_RIWO1_STR-BAUTX sy-vline 
WA_RIWO1_STR-ILOAN sy-vline 
WA_RIWO1_STR-ILOAI sy-vline 
WA_RIWO1_STR-ILOAK sy-vline 
WA_RIWO1_STR-SINIT sy-vline 
WA_RIWO1_STR-ILOAC sy-vline 
WA_RIWO1_STR-MTYPO sy-vline 
WA_RIWO1_STR-AKTYP sy-vline 
WA_RIWO1_STR-VROBJ sy-vline 
WA_RIWO1_STR-VRBGR sy-vline 
WA_RIWO1_STR-SRTCD sy-vline 
WA_RIWO1_STR-SDATE sy-vline 
WA_RIWO1_STR-SMODE sy-vline 
WA_RIWO1_STR-SMSGT sy-vline 
WA_RIWO1_STR-IWERK sy-vline 
WA_RIWO1_STR-INGRP sy-vline 
WA_RIWO1_STR-SZEIT sy-vline 
WA_RIWO1_STR-CURSO sy-vline 
WA_RIWO1_STR-NROBJ sy-vline 
WA_RIWO1_STR-AEKNZ sy-vline 
WA_RIWO1_STR-BEZDT sy-vline 
WA_RIWO1_STR-BRZUR sy-vline 
WA_RIWO1_STR-INFO_WIND sy-vline 
WA_RIWO1_STR-SERVICE sy-vline 
WA_RIWO1_STR-PANEL sy-vline 
WA_RIWO1_STR-AGIDV sy-vline 
WA_RIWO1_STR-CUSCR sy-vline 
WA_RIWO1_STR-OWNER sy-vline 
WA_RIWO1_STR-CLNOT sy-vline 
WA_RIWO1_STR-CHKAT sy-vline 
WA_RIWO1_STR-VRGNG sy-vline 
WA_RIWO1_STR-MATNR sy-vline 
WA_RIWO1_STR-MATKTX sy-vline 
WA_RIWO1_STR-SERIALNR sy-vline 
WA_RIWO1_STR-FLGSER sy-vline 
WA_RIWO1_STR-DEVICEID sy-vline 
WA_RIWO1_STR-PHYNR sy-vline 
WA_RIWO1_STR-KTEXT sy-vline 
WA_RIWO1_STR-PRUEFLOS sy-vline 
WA_RIWO1_STR-TCODE sy-vline 
WA_RIWO1_STR-QMART sy-vline 
WA_RIWO1_STR-UII sy-vline      INTO ld_text SEPARATED BY SPACE.

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