ABAP Select data from SAP table OILKOMG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OILKOMG
*  INTO TABLE @DATA(IT_OILKOMG2).
*--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_OILKOMG INDEX 1 INTO DATA(WA_OILKOMG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OILKOMG>-OIC_DRCTRY = 1.
<OILKOMG>-OIC_DRCREG = 1.
<OILKOMG>-OIMETIND = 1.
<OILKOMG>-OIWAP = 1.
<OILKOMG>-OISLF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OILKOMG-OIPSDRC, sy-vline,
  WA_OILKOMG-OIHANTYP, sy-vline,
  WA_OILKOMG-OITAXGRP, sy-vline,
  WA_OILKOMG-OIINEX, sy-vline,
  WA_OILKOMG-OICONTNR, sy-vline,
  WA_OILKOMG-OIC_KMPOS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OILKOMG 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_OILKOMG 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_OILKOMG INTO WA_OILKOMG.


*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 NUMCV, internal->external for field OIMETIND
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_OILKOMG-OIMETIND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OILKOMG-OIMETIND.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field OIWAP
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_OILKOMG-OIWAP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OILKOMG-OIWAP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field OISLF
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_OILKOMG-OISLF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OILKOMG-OISLF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field OIPSDRC
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_OILKOMG-OIPSDRC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OILKOMG-OIPSDRC.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field OIRIPBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OILKOMG-OIRIPBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OILKOMG-OIRIPBLNR.
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_OILKOMG_STR, 
OIC_DRCTRY TYPE STRING,
OIC_DRCREG TYPE STRING,
OIMETIND TYPE STRING,
OIWAP TYPE STRING,
OISLF TYPE STRING,
OIPSDRC TYPE STRING,
OIHANTYP TYPE STRING,
OITAXGRP TYPE STRING,
OIINEX TYPE STRING,
OICONTNR TYPE STRING,
OIC_KMPOS TYPE STRING,
OICHEADOFF TYPE STRING,
OIPIPEVAL TYPE STRING,
OIC_LIFNR TYPE STRING,
OIC_DCITYC TYPE STRING,
OIC_DCOUNC TYPE STRING,
OIC_DREGIO TYPE STRING,
OIC_DLAND1 TYPE STRING,
OIC_OCITYC TYPE STRING,
OIC_OCOUNC TYPE STRING,
OIC_OREGIO TYPE STRING,
OIC_OLAND1 TYPE STRING,
OIC_PORGIN TYPE STRING,
OIC_PDESTN TYPE STRING,
OIC_PTRIP TYPE STRING,
OIC_PBATCH TYPE STRING,
OIC_MOT TYPE STRING,
OIC_AORGIN TYPE STRING,
OIC_ADESTN TYPE STRING,
OIC_TRUCKN TYPE STRING,
OIA_BASELO TYPE STRING,
OIC_TIME TYPE STRING,
OIBASPROD TYPE STRING,
OIFPBL TYPE STRING,
OIFWE TYPE STRING,
OIFBPR TYPE STRING,
LGORT TYPE STRING,
OIGSHTYPE TYPE STRING,
OIGVEHICLE TYPE STRING,
OIGVEH_TYP TYPE STRING,
OIGVEHMODE TYPE STRING,
OIGROUTEV TYPE STRING,
OIGGROUP TYPE STRING,
OIGKNOTL TYPE STRING,
OIGKNOTD TYPE STRING,
OICCINS TYPE STRING,
OIRICOMMCAL TYPE STRING,
OIRIPBLNR TYPE STRING,
OISTYP TYPE STRING,
OIRE_SRCDTF TYPE STRING,
OIRI_FEEBASE_V TYPE STRING,
OIRI_FEEBASE_Q TYPE STRING,
OIR_ENTERABLE TYPE STRING,
OIRNBT TYPE STRING,
OIRIAGGPTR TYPE STRING,
OIRI_COMMREV TYPE STRING,
OIRELPCGROUP TYPE STRING,
OIRCMETREV TYPE STRING,
OIHMTXGRP TYPE STRING,
OIHCGROUP TYPE STRING,
OIHVGROUP TYPE STRING,
OIH_ETAX_GROUP TYPE STRING,
OIH_ETAX_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OILKOMG_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_OILKOMG_STR-OIC_DRCTRY sy-vline 
WA_OILKOMG_STR-OIC_DRCREG sy-vline 
WA_OILKOMG_STR-OIMETIND sy-vline 
WA_OILKOMG_STR-OIWAP sy-vline 
WA_OILKOMG_STR-OISLF sy-vline 
WA_OILKOMG_STR-OIPSDRC sy-vline 
WA_OILKOMG_STR-OIHANTYP sy-vline 
WA_OILKOMG_STR-OITAXGRP sy-vline 
WA_OILKOMG_STR-OIINEX sy-vline 
WA_OILKOMG_STR-OICONTNR sy-vline 
WA_OILKOMG_STR-OIC_KMPOS sy-vline 
WA_OILKOMG_STR-OICHEADOFF sy-vline 
WA_OILKOMG_STR-OIPIPEVAL sy-vline 
WA_OILKOMG_STR-OIC_LIFNR sy-vline 
WA_OILKOMG_STR-OIC_DCITYC sy-vline 
WA_OILKOMG_STR-OIC_DCOUNC sy-vline 
WA_OILKOMG_STR-OIC_DREGIO sy-vline 
WA_OILKOMG_STR-OIC_DLAND1 sy-vline 
WA_OILKOMG_STR-OIC_OCITYC sy-vline 
WA_OILKOMG_STR-OIC_OCOUNC sy-vline 
WA_OILKOMG_STR-OIC_OREGIO sy-vline 
WA_OILKOMG_STR-OIC_OLAND1 sy-vline 
WA_OILKOMG_STR-OIC_PORGIN sy-vline 
WA_OILKOMG_STR-OIC_PDESTN sy-vline 
WA_OILKOMG_STR-OIC_PTRIP sy-vline 
WA_OILKOMG_STR-OIC_PBATCH sy-vline 
WA_OILKOMG_STR-OIC_MOT sy-vline 
WA_OILKOMG_STR-OIC_AORGIN sy-vline 
WA_OILKOMG_STR-OIC_ADESTN sy-vline 
WA_OILKOMG_STR-OIC_TRUCKN sy-vline 
WA_OILKOMG_STR-OIA_BASELO sy-vline 
WA_OILKOMG_STR-OIC_TIME sy-vline 
WA_OILKOMG_STR-OIBASPROD sy-vline 
WA_OILKOMG_STR-OIFPBL sy-vline 
WA_OILKOMG_STR-OIFWE sy-vline 
WA_OILKOMG_STR-OIFBPR sy-vline 
WA_OILKOMG_STR-LGORT sy-vline 
WA_OILKOMG_STR-OIGSHTYPE sy-vline 
WA_OILKOMG_STR-OIGVEHICLE sy-vline 
WA_OILKOMG_STR-OIGVEH_TYP sy-vline 
WA_OILKOMG_STR-OIGVEHMODE sy-vline 
WA_OILKOMG_STR-OIGROUTEV sy-vline 
WA_OILKOMG_STR-OIGGROUP sy-vline 
WA_OILKOMG_STR-OIGKNOTL sy-vline 
WA_OILKOMG_STR-OIGKNOTD sy-vline 
WA_OILKOMG_STR-OICCINS sy-vline 
WA_OILKOMG_STR-OIRICOMMCAL sy-vline 
WA_OILKOMG_STR-OIRIPBLNR sy-vline 
WA_OILKOMG_STR-OISTYP sy-vline 
WA_OILKOMG_STR-OIRE_SRCDTF sy-vline 
WA_OILKOMG_STR-OIRI_FEEBASE_V sy-vline 
WA_OILKOMG_STR-OIRI_FEEBASE_Q sy-vline 
WA_OILKOMG_STR-OIR_ENTERABLE sy-vline 
WA_OILKOMG_STR-OIRNBT sy-vline 
WA_OILKOMG_STR-OIRIAGGPTR sy-vline 
WA_OILKOMG_STR-OIRI_COMMREV sy-vline 
WA_OILKOMG_STR-OIRELPCGROUP sy-vline 
WA_OILKOMG_STR-OIRCMETREV sy-vline 
WA_OILKOMG_STR-OIHMTXGRP sy-vline 
WA_OILKOMG_STR-OIHCGROUP sy-vline 
WA_OILKOMG_STR-OIHVGROUP sy-vline 
WA_OILKOMG_STR-OIH_ETAX_GROUP sy-vline 
WA_OILKOMG_STR-OIH_ETAX_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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