ABAP Select data from SAP table RIHSTRAT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RIHSTRAT
*  INTO TABLE @DATA(IT_RIHSTRAT2).
*--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_RIHSTRAT INDEX 1 INTO DATA(WA_RIHSTRAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RIHSTRAT>-STRAT = 1.
<RIHSTRAT>-KZYK01 = 1.
<RIHSTRAT>-KZYK02 = 1.
<RIHSTRAT>-KZYK03 = 1.
<RIHSTRAT>-KZYK04 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RIHSTRAT-KZYK05, sy-vline,
  WA_RIHSTRAT-KZYK06, sy-vline,
  WA_RIHSTRAT-KZYK07, sy-vline,
  WA_RIHSTRAT-KZYK08, sy-vline,
  WA_RIHSTRAT-KZYK09, sy-vline,
  WA_RIHSTRAT-KZYK10, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RIHSTRAT 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_RIHSTRAT 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_RIHSTRAT INTO WA_RIHSTRAT.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RIHSTRAT_STR, 
STRAT TYPE STRING,
KZYK01 TYPE STRING,
KZYK02 TYPE STRING,
KZYK03 TYPE STRING,
KZYK04 TYPE STRING,
KZYK05 TYPE STRING,
KZYK06 TYPE STRING,
KZYK07 TYPE STRING,
KZYK08 TYPE STRING,
KZYK09 TYPE STRING,
KZYK10 TYPE STRING,
KZYK11 TYPE STRING,
KZYK12 TYPE STRING,
KZYK13 TYPE STRING,
KZYK14 TYPE STRING,
KZYK15 TYPE STRING,
KZYK16 TYPE STRING,
KZYK17 TYPE STRING,
KZYK18 TYPE STRING,
KZYK19 TYPE STRING,
KZYK20 TYPE STRING,
PAKET01 TYPE STRING,
PAKET02 TYPE STRING,
PAKET03 TYPE STRING,
PAKET04 TYPE STRING,
PAKET05 TYPE STRING,
PAKET06 TYPE STRING,
PAKET07 TYPE STRING,
PAKET08 TYPE STRING,
PAKET09 TYPE STRING,
PAKET10 TYPE STRING,
PAKET11 TYPE STRING,
PAKET12 TYPE STRING,
PAKET13 TYPE STRING,
PAKET14 TYPE STRING,
PAKET15 TYPE STRING,
PAKET16 TYPE STRING,
PAKET17 TYPE STRING,
PAKET18 TYPE STRING,
PAKET19 TYPE STRING,
PAKET20 TYPE STRING,
MARK01 TYPE STRING,
MARK02 TYPE STRING,
MARK03 TYPE STRING,
MARK04 TYPE STRING,
MARK05 TYPE STRING,
MARK06 TYPE STRING,
MARK07 TYPE STRING,
MARK08 TYPE STRING,
MARK09 TYPE STRING,
MARK10 TYPE STRING,
MARK11 TYPE STRING,
MARK12 TYPE STRING,
MARK13 TYPE STRING,
MARK14 TYPE STRING,
MARK15 TYPE STRING,
MARK16 TYPE STRING,
MARK17 TYPE STRING,
MARK18 TYPE STRING,
MARK19 TYPE STRING,
MARK20 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RIHSTRAT_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_RIHSTRAT_STR-STRAT sy-vline 
WA_RIHSTRAT_STR-KZYK01 sy-vline 
WA_RIHSTRAT_STR-KZYK02 sy-vline 
WA_RIHSTRAT_STR-KZYK03 sy-vline 
WA_RIHSTRAT_STR-KZYK04 sy-vline 
WA_RIHSTRAT_STR-KZYK05 sy-vline 
WA_RIHSTRAT_STR-KZYK06 sy-vline 
WA_RIHSTRAT_STR-KZYK07 sy-vline 
WA_RIHSTRAT_STR-KZYK08 sy-vline 
WA_RIHSTRAT_STR-KZYK09 sy-vline 
WA_RIHSTRAT_STR-KZYK10 sy-vline 
WA_RIHSTRAT_STR-KZYK11 sy-vline 
WA_RIHSTRAT_STR-KZYK12 sy-vline 
WA_RIHSTRAT_STR-KZYK13 sy-vline 
WA_RIHSTRAT_STR-KZYK14 sy-vline 
WA_RIHSTRAT_STR-KZYK15 sy-vline 
WA_RIHSTRAT_STR-KZYK16 sy-vline 
WA_RIHSTRAT_STR-KZYK17 sy-vline 
WA_RIHSTRAT_STR-KZYK18 sy-vline 
WA_RIHSTRAT_STR-KZYK19 sy-vline 
WA_RIHSTRAT_STR-KZYK20 sy-vline 
WA_RIHSTRAT_STR-PAKET01 sy-vline 
WA_RIHSTRAT_STR-PAKET02 sy-vline 
WA_RIHSTRAT_STR-PAKET03 sy-vline 
WA_RIHSTRAT_STR-PAKET04 sy-vline 
WA_RIHSTRAT_STR-PAKET05 sy-vline 
WA_RIHSTRAT_STR-PAKET06 sy-vline 
WA_RIHSTRAT_STR-PAKET07 sy-vline 
WA_RIHSTRAT_STR-PAKET08 sy-vline 
WA_RIHSTRAT_STR-PAKET09 sy-vline 
WA_RIHSTRAT_STR-PAKET10 sy-vline 
WA_RIHSTRAT_STR-PAKET11 sy-vline 
WA_RIHSTRAT_STR-PAKET12 sy-vline 
WA_RIHSTRAT_STR-PAKET13 sy-vline 
WA_RIHSTRAT_STR-PAKET14 sy-vline 
WA_RIHSTRAT_STR-PAKET15 sy-vline 
WA_RIHSTRAT_STR-PAKET16 sy-vline 
WA_RIHSTRAT_STR-PAKET17 sy-vline 
WA_RIHSTRAT_STR-PAKET18 sy-vline 
WA_RIHSTRAT_STR-PAKET19 sy-vline 
WA_RIHSTRAT_STR-PAKET20 sy-vline 
WA_RIHSTRAT_STR-MARK01 sy-vline 
WA_RIHSTRAT_STR-MARK02 sy-vline 
WA_RIHSTRAT_STR-MARK03 sy-vline 
WA_RIHSTRAT_STR-MARK04 sy-vline 
WA_RIHSTRAT_STR-MARK05 sy-vline 
WA_RIHSTRAT_STR-MARK06 sy-vline 
WA_RIHSTRAT_STR-MARK07 sy-vline 
WA_RIHSTRAT_STR-MARK08 sy-vline 
WA_RIHSTRAT_STR-MARK09 sy-vline 
WA_RIHSTRAT_STR-MARK10 sy-vline 
WA_RIHSTRAT_STR-MARK11 sy-vline 
WA_RIHSTRAT_STR-MARK12 sy-vline 
WA_RIHSTRAT_STR-MARK13 sy-vline 
WA_RIHSTRAT_STR-MARK14 sy-vline 
WA_RIHSTRAT_STR-MARK15 sy-vline 
WA_RIHSTRAT_STR-MARK16 sy-vline 
WA_RIHSTRAT_STR-MARK17 sy-vline 
WA_RIHSTRAT_STR-MARK18 sy-vline 
WA_RIHSTRAT_STR-MARK19 sy-vline 
WA_RIHSTRAT_STR-MARK20 sy-vline      INTO ld_text SEPARATED BY SPACE.

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