ABAP Select data from SAP table OIR_KOMB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIR_KOMB
*  INTO TABLE @DATA(IT_OIR_KOMB2).
*--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_OIR_KOMB INDEX 1 INTO DATA(WA_OIR_KOMB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIR_KOMB>-PRNTYPGP = 1.
<OIR_KOMB>-DOCCAT = 1.
<OIR_KOMB>-SRCTAB = 1.
<OIR_KOMB>-SRCYRIND = 1.
<OIR_KOMB>-SRCCOMPIND = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIR_KOMB-PRINTCALL, sy-vline,
  WA_OIR_KOMB-SRCDOCNO, sy-vline,
  WA_OIR_KOMB-SRCDOCYR, sy-vline,
  WA_OIR_KOMB-SRCDOCCO, sy-vline,
  WA_OIR_KOMB-PBLNR, sy-vline,
  WA_OIR_KOMB-CHOBJ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIR_KOMB 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_OIR_KOMB 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_OIR_KOMB INTO WA_OIR_KOMB.


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

*Conversion exit GJAHR, internal->external for field SRCDOCYR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_OIR_KOMB-SRCDOCYR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIR_KOMB-SRCDOCYR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIR_KOMB-PBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIR_KOMB-PBLNR.
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_OIR_KOMB_STR, 
PRNTYPGP TYPE STRING,
DOCCAT TYPE STRING,
SRCTAB TYPE STRING,
SRCYRIND TYPE STRING,
SRCCOMPIND TYPE STRING,
PRINTCALL TYPE STRING,
SRCDOCNO TYPE STRING,
SRCDOCYR TYPE STRING,
SRCDOCCO TYPE STRING,
PBLNR TYPE STRING,
CHOBJ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIR_KOMB_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_OIR_KOMB_STR-PRNTYPGP sy-vline 
WA_OIR_KOMB_STR-DOCCAT sy-vline 
WA_OIR_KOMB_STR-SRCTAB sy-vline 
WA_OIR_KOMB_STR-SRCYRIND sy-vline 
WA_OIR_KOMB_STR-SRCCOMPIND sy-vline 
WA_OIR_KOMB_STR-PRINTCALL sy-vline 
WA_OIR_KOMB_STR-SRCDOCNO sy-vline 
WA_OIR_KOMB_STR-SRCDOCYR sy-vline 
WA_OIR_KOMB_STR-SRCDOCCO sy-vline 
WA_OIR_KOMB_STR-PBLNR sy-vline 
WA_OIR_KOMB_STR-CHOBJ sy-vline      INTO ld_text SEPARATED BY SPACE.

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