ABAP Select data from SAP table RIHINST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RIHINST
*  INTO TABLE @DATA(IT_RIHINST2).
*--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_RIHINST INDEX 1 INTO DATA(WA_RIHINST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RIHINST>-MANDT = 1.
<RIHINST>-IBASE = 1.
<RIHINST>-CRNAM = 1.
<RIHINST>-CRTIM = 1.
<RIHINST>-UPNAM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RIHINST-UPTIM, sy-vline,
  WA_RIHINST-IBTYP, sy-vline,
  WA_RIHINST-COMPIND, sy-vline,
  WA_RIHINST-CONFIND, sy-vline,
  WA_RIHINST-FILID, sy-vline,
  WA_RIHINST-VALTYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RIHINST 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_RIHINST 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_RIHINST INTO WA_RIHINST.


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

*Conversion exit TSTPS, internal->external for field CRTIM
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_RIHINST-CRTIM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIHINST-CRTIM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field UPTIM
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_RIHINST-UPTIM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIHINST-UPTIM.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ISOLA, internal->external for field CLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RIHINST-CLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIHINST-CLANG.
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_RIHINST_STR, 
MANDT TYPE STRING,
IBASE TYPE STRING,
CRNAM TYPE STRING,
CRTIM TYPE STRING,
UPNAM TYPE STRING,
UPTIM TYPE STRING,
IBTYP TYPE STRING,
COMPIND TYPE STRING,
CONFIND TYPE STRING,
FILID TYPE STRING,
VALTYP TYPE STRING,
INTST TYPE STRING,
STTYP TYPE STRING,
IB_GUID TYPE STRING,
IB_GUID_16 TYPE STRING,
OBJNR TYPE STRING,
EXTID TYPE STRING,
MLANG TYPE STRING,
AUTHG TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
MSTONE TYPE STRING,
COUNTER TYPE STRING,
CUOBJ TYPE STRING,
PLANT TYPE STRING,
MATNR TYPE STRING,
KALNR TYPE STRING,
KBID TYPE STRING,
CLANG TYPE STRING,
CSTATUS TYPE STRING,
_DATAAGING TYPE STRING,
IB_DESCR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RIHINST_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_RIHINST_STR-MANDT sy-vline 
WA_RIHINST_STR-IBASE sy-vline 
WA_RIHINST_STR-CRNAM sy-vline 
WA_RIHINST_STR-CRTIM sy-vline 
WA_RIHINST_STR-UPNAM sy-vline 
WA_RIHINST_STR-UPTIM sy-vline 
WA_RIHINST_STR-IBTYP sy-vline 
WA_RIHINST_STR-COMPIND sy-vline 
WA_RIHINST_STR-CONFIND sy-vline 
WA_RIHINST_STR-FILID sy-vline 
WA_RIHINST_STR-VALTYP sy-vline 
WA_RIHINST_STR-INTST sy-vline 
WA_RIHINST_STR-STTYP sy-vline 
WA_RIHINST_STR-IB_GUID sy-vline 
WA_RIHINST_STR-IB_GUID_16 sy-vline 
WA_RIHINST_STR-OBJNR sy-vline 
WA_RIHINST_STR-EXTID sy-vline 
WA_RIHINST_STR-MLANG sy-vline 
WA_RIHINST_STR-AUTHG sy-vline 
WA_RIHINST_STR-VBELN sy-vline 
WA_RIHINST_STR-POSNR sy-vline 
WA_RIHINST_STR-MSTONE sy-vline 
WA_RIHINST_STR-COUNTER sy-vline 
WA_RIHINST_STR-CUOBJ sy-vline 
WA_RIHINST_STR-PLANT sy-vline 
WA_RIHINST_STR-MATNR sy-vline 
WA_RIHINST_STR-KALNR sy-vline 
WA_RIHINST_STR-KBID sy-vline 
WA_RIHINST_STR-CLANG sy-vline 
WA_RIHINST_STR-CSTATUS sy-vline 
WA_RIHINST_STR-_DATAAGING sy-vline 
WA_RIHINST_STR-IB_DESCR sy-vline      INTO ld_text SEPARATED BY SPACE.

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