ABAP Select data from SAP table RIHGNR into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RIHGNR 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 RIHGNR. 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 RIHGNR 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_RIHGNR TYPE STANDARD TABLE OF RIHGNR,
      WA_RIHGNR TYPE RIHGNR,
      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: <RIHGNR> TYPE RIHGNR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RIHGNR
*  INTO TABLE @DATA(IT_RIHGNR2).
*--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_RIHGNR INDEX 1 INTO DATA(WA_RIHGNR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RIHGNR>-MANDT = 1.
<RIHGNR>-GNTYP = 1.
<RIHGNR>-PMSOG = 1.
<RIHGNR>-GNTXT = 1.
<RIHGNR>-ERDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RIHGNR-ERNAM, sy-vline,
  WA_RIHGNR-AEDAT, sy-vline,
  WA_RIHGNR-AENAM, sy-vline,
  WA_RIHGNR-K_AF, sy-vline,
  WA_RIHGNR-K_AA, sy-vline,
  WA_RIHGNR-K_DRUCK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RIHGNR 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_RIHGNR 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_RIHGNR INTO WA_RIHGNR.


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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field KUNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RIHGNR-KUNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIHGNR-KUNUM.
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_RIHGNR_STR, 
MANDT TYPE STRING,
GNTYP TYPE STRING,
PMSOG TYPE STRING,
GNTXT TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
K_AF TYPE STRING,
K_AA TYPE STRING,
K_DRUCK TYPE STRING,
KZLTX TYPE STRING,
AUFNR TYPE STRING,
IPHAS TYPE STRING,
AUFSTAT TYPE STRING,
GSTRP TYPE STRING,
GLTRP TYPE STRING,
VORNR TYPE STRING,
KTEXT TYPE STRING,
K_OBJEKT TYPE STRING,
IHASP TYPE STRING,
K_NODEL TYPE STRING,
K_ORIGIN TYPE STRING,
CLASS TYPE STRING,
GENPAUS TYPE STRING,
GENNAME TYPE STRING,
GENDATUM TYPE STRING,
GENTIME TYPE STRING,
GENVDATE TYPE STRING,
GENBDATE TYPE STRING,
GENVTIME TYPE STRING,
GENBTIME TYPE STRING,
GENINAME TYPE STRING,
GENIDATE TYPE STRING,
GENITIME TYPE STRING,
GENIAKT TYPE STRING,
GENVNAME TYPE STRING,
A_TPLNR TYPE STRING,
A_PLTXT TYPE STRING,
A_EQFNR TYPE STRING,
A_EQUNR TYPE STRING,
A_EQKTX TYPE STRING,
A_SERMAT TYPE STRING,
A_SERIALNR TYPE STRING,
ILART TYPE STRING,
BUKRS TYPE STRING,
SWERK TYPE STRING,
IWERK TYPE STRING,
BEBER TYPE STRING,
INGPR TYPE STRING,
KUNUM TYPE STRING,
A_STRNO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RIHGNR_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_RIHGNR_STR-MANDT sy-vline 
WA_RIHGNR_STR-GNTYP sy-vline 
WA_RIHGNR_STR-PMSOG sy-vline 
WA_RIHGNR_STR-GNTXT sy-vline 
WA_RIHGNR_STR-ERDAT sy-vline 
WA_RIHGNR_STR-ERNAM sy-vline 
WA_RIHGNR_STR-AEDAT sy-vline 
WA_RIHGNR_STR-AENAM sy-vline 
WA_RIHGNR_STR-K_AF sy-vline 
WA_RIHGNR_STR-K_AA sy-vline 
WA_RIHGNR_STR-K_DRUCK sy-vline 
WA_RIHGNR_STR-KZLTX sy-vline 
WA_RIHGNR_STR-AUFNR sy-vline 
WA_RIHGNR_STR-IPHAS sy-vline 
WA_RIHGNR_STR-AUFSTAT sy-vline 
WA_RIHGNR_STR-GSTRP sy-vline 
WA_RIHGNR_STR-GLTRP sy-vline 
WA_RIHGNR_STR-VORNR sy-vline 
WA_RIHGNR_STR-KTEXT sy-vline 
WA_RIHGNR_STR-K_OBJEKT sy-vline 
WA_RIHGNR_STR-IHASP sy-vline 
WA_RIHGNR_STR-K_NODEL sy-vline 
WA_RIHGNR_STR-K_ORIGIN sy-vline 
WA_RIHGNR_STR-CLASS sy-vline 
WA_RIHGNR_STR-GENPAUS sy-vline 
WA_RIHGNR_STR-GENNAME sy-vline 
WA_RIHGNR_STR-GENDATUM sy-vline 
WA_RIHGNR_STR-GENTIME sy-vline 
WA_RIHGNR_STR-GENVDATE sy-vline 
WA_RIHGNR_STR-GENBDATE sy-vline 
WA_RIHGNR_STR-GENVTIME sy-vline 
WA_RIHGNR_STR-GENBTIME sy-vline 
WA_RIHGNR_STR-GENINAME sy-vline 
WA_RIHGNR_STR-GENIDATE sy-vline 
WA_RIHGNR_STR-GENITIME sy-vline 
WA_RIHGNR_STR-GENIAKT sy-vline 
WA_RIHGNR_STR-GENVNAME sy-vline 
WA_RIHGNR_STR-A_TPLNR sy-vline 
WA_RIHGNR_STR-A_PLTXT sy-vline 
WA_RIHGNR_STR-A_EQFNR sy-vline 
WA_RIHGNR_STR-A_EQUNR sy-vline 
WA_RIHGNR_STR-A_EQKTX sy-vline 
WA_RIHGNR_STR-A_SERMAT sy-vline 
WA_RIHGNR_STR-A_SERIALNR sy-vline 
WA_RIHGNR_STR-ILART sy-vline 
WA_RIHGNR_STR-BUKRS sy-vline 
WA_RIHGNR_STR-SWERK sy-vline 
WA_RIHGNR_STR-IWERK sy-vline 
WA_RIHGNR_STR-BEBER sy-vline 
WA_RIHGNR_STR-INGPR sy-vline 
WA_RIHGNR_STR-KUNUM sy-vline 
WA_RIHGNR_STR-A_STRNO sy-vline      INTO ld_text SEPARATED BY SPACE.

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