ABAP Select data from SAP table OIRHCHSTRNSMN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIRHCHSTRNSMN
*  INTO TABLE @DATA(IT_OIRHCHSTRNSMN2).
*--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_OIRHCHSTRNSMN INDEX 1 INTO DATA(WA_OIRHCHSTRNSMN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIRHCHSTRNSMN>-MANDT = 1.
<OIRHCHSTRNSMN>-IDOCNR = 1.
<OIRHCHSTRNSMN>-CHOBJ = 1.
<OIRHCHSTRNSMN>-TRANSMSNNR = 1.
<OIRHCHSTRNSMN>-UEBNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIRHCHSTRNSMN-UEBDAT, sy-vline,
  WA_OIRHCHSTRNSMN-UEBTIM, sy-vline,
  WA_OIRHCHSTRNSMN-CTRL, sy-vline,
  WA_OIRHCHSTRNSMN-CTRC, sy-vline,
  WA_OIRHCHSTRNSMN-CTRTH, sy-vline,
  WA_OIRHCHSTRNSMN-CTRTI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIRHCHSTRNSMN 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_OIRHCHSTRNSMN 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_OIRHCHSTRNSMN INTO WA_OIRHCHSTRNSMN.


*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 TRANSMSNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIRHCHSTRNSMN-TRANSMSNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIRHCHSTRNSMN-TRANSMSNNR.
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_OIRHCHSTRNSMN_STR, 
MANDT TYPE STRING,
IDOCNR TYPE STRING,
CHOBJ TYPE STRING,
TRANSMSNNR TYPE STRING,
UEBNR TYPE STRING,
UEBDAT TYPE STRING,
UEBTIM TYPE STRING,
CTRL TYPE STRING,
CTRC TYPE STRING,
CTRTH TYPE STRING,
CTRTI TYPE STRING,
CTRDB TYPE STRING,
CTRCR TYPE STRING,
TOTAL_DEBITS TYPE STRING,
TOTAL_CREDITS TYPE STRING,
TOTAL TYPE STRING,
CURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIRHCHSTRNSMN_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_OIRHCHSTRNSMN_STR-MANDT sy-vline 
WA_OIRHCHSTRNSMN_STR-IDOCNR sy-vline 
WA_OIRHCHSTRNSMN_STR-CHOBJ sy-vline 
WA_OIRHCHSTRNSMN_STR-TRANSMSNNR sy-vline 
WA_OIRHCHSTRNSMN_STR-UEBNR sy-vline 
WA_OIRHCHSTRNSMN_STR-UEBDAT sy-vline 
WA_OIRHCHSTRNSMN_STR-UEBTIM sy-vline 
WA_OIRHCHSTRNSMN_STR-CTRL sy-vline 
WA_OIRHCHSTRNSMN_STR-CTRC sy-vline 
WA_OIRHCHSTRNSMN_STR-CTRTH sy-vline 
WA_OIRHCHSTRNSMN_STR-CTRTI sy-vline 
WA_OIRHCHSTRNSMN_STR-CTRDB sy-vline 
WA_OIRHCHSTRNSMN_STR-CTRCR sy-vline 
WA_OIRHCHSTRNSMN_STR-TOTAL_DEBITS sy-vline 
WA_OIRHCHSTRNSMN_STR-TOTAL_CREDITS sy-vline 
WA_OIRHCHSTRNSMN_STR-TOTAL sy-vline 
WA_OIRHCHSTRNSMN_STR-CURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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