ABAP Select data from SAP table RIHAFRU into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RIHAFRU
*  INTO TABLE @DATA(IT_RIHAFRU2).
*--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_RIHAFRU INDEX 1 INTO DATA(WA_RIHAFRU2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RIHAFRU>-RUECK = 1.
<RIHAFRU>-RMZHL = 1.
<RIHAFRU>-ERSDA = 1.
<RIHAFRU>-ERNAM = 1.
<RIHAFRU>-LAEDA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RIHAFRU-AENAM, sy-vline,
  WA_RIHAFRU-BUDAT, sy-vline,
  WA_RIHAFRU-WERKS, sy-vline,
  WA_RIHAFRU-LTXA1, sy-vline,
  WA_RIHAFRU-ABARB, sy-vline,
  WA_RIHAFRU-ISMNW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RIHAFRU 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_RIHAFRU 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_RIHAFRU INTO WA_RIHAFRU.


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

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

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

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

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

*Conversion exit CUNIT, internal->external for field ODAUE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RIHAFRU-ODAUE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIHAFRU-ODAUE.
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_RIHAFRU_STR, 
RUECK TYPE STRING,
RMZHL TYPE STRING,
ERSDA TYPE STRING,
ERNAM TYPE STRING,
LAEDA TYPE STRING,
AENAM TYPE STRING,
BUDAT TYPE STRING,
WERKS TYPE STRING,
LTXA1 TYPE STRING,
ABARB TYPE STRING,
ISMNW TYPE STRING,
ISMNE TYPE STRING,
LEARR TYPE STRING,
IDAUR TYPE STRING,
IDAUE TYPE STRING,
PERNR TYPE STRING,
ISDD TYPE STRING,
ISDZ TYPE STRING,
IEDD TYPE STRING,
IEDZ TYPE STRING,
PEDD TYPE STRING,
PEDZ TYPE STRING,
AUERU TYPE STRING,
AUSOR TYPE STRING,
STNDR TYPE STRING,
AUFNR TYPE STRING,
VORNR TYPE STRING,
OFMNW TYPE STRING,
OFMNE TYPE STRING,
LEKNW TYPE STRING,
ODAUR TYPE STRING,
ODAUE TYPE STRING,
STOKZ TYPE STRING,
STZHL TYPE STRING,
GEWRK TYPE STRING,
MANDT TYPE STRING,
GRUND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RIHAFRU_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_RIHAFRU_STR-RUECK sy-vline 
WA_RIHAFRU_STR-RMZHL sy-vline 
WA_RIHAFRU_STR-ERSDA sy-vline 
WA_RIHAFRU_STR-ERNAM sy-vline 
WA_RIHAFRU_STR-LAEDA sy-vline 
WA_RIHAFRU_STR-AENAM sy-vline 
WA_RIHAFRU_STR-BUDAT sy-vline 
WA_RIHAFRU_STR-WERKS sy-vline 
WA_RIHAFRU_STR-LTXA1 sy-vline 
WA_RIHAFRU_STR-ABARB sy-vline 
WA_RIHAFRU_STR-ISMNW sy-vline 
WA_RIHAFRU_STR-ISMNE sy-vline 
WA_RIHAFRU_STR-LEARR sy-vline 
WA_RIHAFRU_STR-IDAUR sy-vline 
WA_RIHAFRU_STR-IDAUE sy-vline 
WA_RIHAFRU_STR-PERNR sy-vline 
WA_RIHAFRU_STR-ISDD sy-vline 
WA_RIHAFRU_STR-ISDZ sy-vline 
WA_RIHAFRU_STR-IEDD sy-vline 
WA_RIHAFRU_STR-IEDZ sy-vline 
WA_RIHAFRU_STR-PEDD sy-vline 
WA_RIHAFRU_STR-PEDZ sy-vline 
WA_RIHAFRU_STR-AUERU sy-vline 
WA_RIHAFRU_STR-AUSOR sy-vline 
WA_RIHAFRU_STR-STNDR sy-vline 
WA_RIHAFRU_STR-AUFNR sy-vline 
WA_RIHAFRU_STR-VORNR sy-vline 
WA_RIHAFRU_STR-OFMNW sy-vline 
WA_RIHAFRU_STR-OFMNE sy-vline 
WA_RIHAFRU_STR-LEKNW sy-vline 
WA_RIHAFRU_STR-ODAUR sy-vline 
WA_RIHAFRU_STR-ODAUE sy-vline 
WA_RIHAFRU_STR-STOKZ sy-vline 
WA_RIHAFRU_STR-STZHL sy-vline 
WA_RIHAFRU_STR-GEWRK sy-vline 
WA_RIHAFRU_STR-MANDT sy-vline 
WA_RIHAFRU_STR-GRUND sy-vline      INTO ld_text SEPARATED BY SPACE.

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