ABAP Select data from SAP table RIHFCOM_XL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RIHFCOM_XL
*  INTO TABLE @DATA(IT_RIHFCOM_XL2).
*--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_RIHFCOM_XL INDEX 1 INTO DATA(WA_RIHFCOM_XL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RIHFCOM_XL>-KTEXT = 1.
<RIHFCOM_XL>-MATNR = 1.
<RIHFCOM_XL>-POSTP = 1.
<RIHFCOM_XL>-WERKS = 1.
<RIHFCOM_XL>-MENGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RIHFCOM_XL-MEINH, sy-vline,
  WA_RIHFCOM_XL-MATKL, sy-vline,
  WA_RIHFCOM_XL-EKGRP, sy-vline,
  WA_RIHFCOM_XL-EKORG, sy-vline,
  WA_RIHFCOM_XL-PREIS, sy-vline,
  WA_RIHFCOM_XL-PEINH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RIHFCOM_XL 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_RIHFCOM_XL 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_RIHFCOM_XL INTO WA_RIHFCOM_XL.


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

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

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

*Conversion exit ISOLA, internal->external for field LTXSP
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RIHFCOM_XL-LTXSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIHFCOM_XL-LTXSP.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field SERVICEPERFORMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RIHFCOM_XL-SERVICEPERFORMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIHFCOM_XL-SERVICEPERFORMER.
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_RIHFCOM_XL_STR, 
KTEXT TYPE STRING,
MATNR TYPE STRING,
POSTP TYPE STRING,
WERKS TYPE STRING,
MENGE TYPE STRING,
MEINH TYPE STRING,
MATKL TYPE STRING,
EKGRP TYPE STRING,
EKORG TYPE STRING,
PREIS TYPE STRING,
PEINH TYPE STRING,
WAERS TYPE STRING,
SAKTO TYPE STRING,
LTXSP TYPE STRING,
IDNLF TYPE STRING,
FLIEF TYPE STRING,
INFNR TYPE STRING,
TLINE TYPE STRING,
LEADTIME TYPE STRING,
MFRPN TYPE STRING,
MFRNR TYPE STRING,
CONTRACT TYPE STRING,
CONTRACT_ITEM TYPE STRING,
CATALOGID TYPE STRING,
CATALOG_PROD_ID TYPE STRING,
SERVICE TYPE STRING,
CUST_FIELD1 TYPE STRING,
CUST_FIELD2 TYPE STRING,
CUST_FIELD3 TYPE STRING,
CUST_FIELD4 TYPE STRING,
CUST_FIELD5 TYPE STRING,
LINE TYPE STRING,
PARENT_ID TYPE STRING,
PRODUCTTYPE TYPE STRING,
SERVICEPERFORMER TYPE STRING,
STARTDATE TYPE STRING,
ENDDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RIHFCOM_XL_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_RIHFCOM_XL_STR-KTEXT sy-vline 
WA_RIHFCOM_XL_STR-MATNR sy-vline 
WA_RIHFCOM_XL_STR-POSTP sy-vline 
WA_RIHFCOM_XL_STR-WERKS sy-vline 
WA_RIHFCOM_XL_STR-MENGE sy-vline 
WA_RIHFCOM_XL_STR-MEINH sy-vline 
WA_RIHFCOM_XL_STR-MATKL sy-vline 
WA_RIHFCOM_XL_STR-EKGRP sy-vline 
WA_RIHFCOM_XL_STR-EKORG sy-vline 
WA_RIHFCOM_XL_STR-PREIS sy-vline 
WA_RIHFCOM_XL_STR-PEINH sy-vline 
WA_RIHFCOM_XL_STR-WAERS sy-vline 
WA_RIHFCOM_XL_STR-SAKTO sy-vline 
WA_RIHFCOM_XL_STR-LTXSP sy-vline 
WA_RIHFCOM_XL_STR-IDNLF sy-vline 
WA_RIHFCOM_XL_STR-FLIEF sy-vline 
WA_RIHFCOM_XL_STR-INFNR sy-vline 
WA_RIHFCOM_XL_STR-TLINE sy-vline 
WA_RIHFCOM_XL_STR-LEADTIME sy-vline 
WA_RIHFCOM_XL_STR-MFRPN sy-vline 
WA_RIHFCOM_XL_STR-MFRNR sy-vline 
WA_RIHFCOM_XL_STR-CONTRACT sy-vline 
WA_RIHFCOM_XL_STR-CONTRACT_ITEM sy-vline 
WA_RIHFCOM_XL_STR-CATALOGID sy-vline 
WA_RIHFCOM_XL_STR-CATALOG_PROD_ID sy-vline 
WA_RIHFCOM_XL_STR-SERVICE sy-vline 
WA_RIHFCOM_XL_STR-CUST_FIELD1 sy-vline 
WA_RIHFCOM_XL_STR-CUST_FIELD2 sy-vline 
WA_RIHFCOM_XL_STR-CUST_FIELD3 sy-vline 
WA_RIHFCOM_XL_STR-CUST_FIELD4 sy-vline 
WA_RIHFCOM_XL_STR-CUST_FIELD5 sy-vline 
WA_RIHFCOM_XL_STR-LINE sy-vline 
WA_RIHFCOM_XL_STR-PARENT_ID sy-vline 
WA_RIHFCOM_XL_STR-PRODUCTTYPE sy-vline 
WA_RIHFCOM_XL_STR-SERVICEPERFORMER sy-vline 
WA_RIHFCOM_XL_STR-STARTDATE sy-vline 
WA_RIHFCOM_XL_STR-ENDDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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