ABAP Select data from SAP table OIJ_KOMB into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP OIJ_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 OIJ_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 OIJ_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_OIJ_KOMB TYPE STANDARD TABLE OF OIJ_KOMB,
      WA_OIJ_KOMB TYPE OIJ_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: <OIJ_KOMB> TYPE OIJ_KOMB.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIJ_KOMB
*  INTO TABLE @DATA(IT_OIJ_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_OIJ_KOMB INDEX 1 INTO DATA(WA_OIJ_KOMB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIJ_KOMB>-NMCARRIER = 1.
<OIJ_KOMB>-NMSHIPPER = 1.
<OIJ_KOMB>-NMSHTYPE = 1.
<OIJ_KOMB>-CYCLE = 1.
<OIJ_KOMB>-NOMST = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIJ_KOMB-TSYST, sy-vline,
  WA_OIJ_KOMB-BOOKTS, sy-vline,
  WA_OIJ_KOMB-TANK, sy-vline,
  WA_OIJ_KOMB-CONS, sy-vline,
  WA_OIJ_KOMB-PARTNR, sy-vline,
  WA_OIJ_KOMB-CONPAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIJ_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_OIJ_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_OIJ_KOMB INTO WA_OIJ_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 NMCARRIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIJ_KOMB-NMCARRIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIJ_KOMB-NMCARRIER.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field INSPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIJ_KOMB-INSPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIJ_KOMB-INSPE.
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_OIJ_KOMB_STR, 
NMCARRIER TYPE STRING,
NMSHIPPER TYPE STRING,
NMSHTYPE TYPE STRING,
CYCLE TYPE STRING,
NOMST TYPE STRING,
TSYST TYPE STRING,
BOOKTS TYPE STRING,
TANK TYPE STRING,
CONS TYPE STRING,
PARTNR TYPE STRING,
CONPAT TYPE STRING,
INSPE TYPE STRING,
SITYP TYPE STRING,
DOCIND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIJ_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_OIJ_KOMB_STR-NMCARRIER sy-vline 
WA_OIJ_KOMB_STR-NMSHIPPER sy-vline 
WA_OIJ_KOMB_STR-NMSHTYPE sy-vline 
WA_OIJ_KOMB_STR-CYCLE sy-vline 
WA_OIJ_KOMB_STR-NOMST sy-vline 
WA_OIJ_KOMB_STR-TSYST sy-vline 
WA_OIJ_KOMB_STR-BOOKTS sy-vline 
WA_OIJ_KOMB_STR-TANK sy-vline 
WA_OIJ_KOMB_STR-CONS sy-vline 
WA_OIJ_KOMB_STR-PARTNR sy-vline 
WA_OIJ_KOMB_STR-CONPAT sy-vline 
WA_OIJ_KOMB_STR-INSPE sy-vline 
WA_OIJ_KOMB_STR-SITYP sy-vline 
WA_OIJ_KOMB_STR-DOCIND sy-vline      INTO ld_text SEPARATED BY SPACE.

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