ABAP Select data from SAP table OI0_IFEKKOOAHEAX into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP OI0_IFEKKOOAHEAX 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 OI0_IFEKKOOAHEAX. 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 OI0_IFEKKOOAHEAX 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_OI0_IFEKKOOAHEAX TYPE STANDARD TABLE OF OI0_IFEKKOOAHEAX,
      WA_OI0_IFEKKOOAHEAX TYPE OI0_IFEKKOOAHEAX,
      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: <OI0_IFEKKOOAHEAX> TYPE OI0_IFEKKOOAHEAX.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_OI0_IFEKKOOAHEAX.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM OI0_IFEKKOOAHEAX
  INTO TABLE IT_OI0_IFEKKOOAHEAX.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OI0_IFEKKOOAHEAX
*  INTO TABLE @DATA(IT_OI0_IFEKKOOAHEAX2).
*--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_OI0_IFEKKOOAHEAX INDEX 1 INTO DATA(WA_OI0_IFEKKOOAHEAX2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_OI0_IFEKKOOAHEAX ASSIGNING <OI0_IFEKKOOAHEAX>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OI0_IFEKKOOAHEAX>-EBELN = 1.
<OI0_IFEKKOOAHEAX>-BSTYP = 1.
<OI0_IFEKKOOAHEAX>-BUKRS = 1.
<OI0_IFEKKOOAHEAX>-BSART = 1.
<OI0_IFEKKOOAHEAX>-LOEKZ = 1.

ENDLOOP.

LOOP AT IT_OI0_IFEKKOOAHEAX INTO WA_OI0_IFEKKOOAHEAX.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OI0_IFEKKOOAHEAX-STATU, sy-vline,
  WA_OI0_IFEKKOOAHEAX-ERDAT, sy-vline,
  WA_OI0_IFEKKOOAHEAX-ERNAM, sy-vline,
  WA_OI0_IFEKKOOAHEAX-PINCR, sy-vline,
  WA_OI0_IFEKKOOAHEAX-LIFNR, sy-vline,
  WA_OI0_IFEKKOOAHEAX-SPRAS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OI0_IFEKKOOAHEAX 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_OI0_IFEKKOOAHEAX 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_OI0_IFEKKOOAHEAX INTO WA_OI0_IFEKKOOAHEAX.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_OI0_IFEKKOOAHEAX_STR, 
EBELN TYPE STRING,
BSTYP TYPE STRING,
BUKRS TYPE STRING,
BSART TYPE STRING,
LOEKZ TYPE STRING,
STATU TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
PINCR TYPE STRING,
LIFNR TYPE STRING,
SPRAS TYPE STRING,
ZTERM TYPE STRING,
ZBD1T TYPE STRING,
ZBD2T TYPE STRING,
ZBD3T TYPE STRING,
ZBD1P TYPE STRING,
ZBD2P TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
WAERS TYPE STRING,
WKURS TYPE STRING,
KUFIX TYPE STRING,
BEDAT TYPE STRING,
KDATB TYPE STRING,
KDATE TYPE STRING,
ANGNR TYPE STRING,
IHRAN TYPE STRING,
IHREZ TYPE STRING,
VERKF TYPE STRING,
TELF1 TYPE STRING,
LLIEF TYPE STRING,
KUNNR TYPE STRING,
KONNR TYPE STRING,
RESWK TYPE STRING,
INCO1 TYPE STRING,
INCO2 TYPE STRING,
SUBMI TYPE STRING,
LIFRE TYPE STRING,
UNSEZ TYPE STRING,
LOGSY TYPE STRING,
UPINC TYPE STRING,
FRGKE TYPE STRING,
FRGKZ TYPE STRING,
STCEG_L TYPE STRING,
OIEXGNUM TYPE STRING,
OIA_BASELO TYPE STRING,
OID_EXTBOL TYPE STRING,
OID_MISCDL 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,END OF T_EKKO_STR.
DATA: WA_OI0_IFEKKOOAHEAX_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_OI0_IFEKKOOAHEAX_STR-EBELN sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-BSTYP sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-BUKRS sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-BSART sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-LOEKZ sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-STATU sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-ERDAT sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-ERNAM sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-PINCR sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-LIFNR sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-SPRAS sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-ZTERM sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-ZBD1T sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-ZBD2T sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-ZBD3T sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-ZBD1P sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-ZBD2P sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-EKORG sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-EKGRP sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-WAERS sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-WKURS sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-KUFIX sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-BEDAT sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-KDATB sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-KDATE sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-ANGNR sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-IHRAN sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-IHREZ sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-VERKF sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-TELF1 sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-LLIEF sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-KUNNR sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-KONNR sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-RESWK sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-INCO1 sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-INCO2 sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-SUBMI sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-LIFRE sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-UNSEZ sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-LOGSY sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-UPINC sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-FRGKE sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-FRGKZ sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-STCEG_L sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OIEXGNUM sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OIA_BASELO sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OID_EXTBOL sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OID_MISCDL sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OIC_LIFNR sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OIC_DCITYC sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OIC_DCOUNC sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OIC_DREGIO sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OIC_DLAND1 sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OIC_OCITYC sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OIC_OCOUNC sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OIC_OREGIO sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OIC_OLAND1 sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OIC_PORGIN sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OIC_PDESTN sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OIC_PTRIP sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OIC_PBATCH sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OIC_MOT sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OIC_AORGIN sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OIC_ADESTN sy-vline 
WA_OI0_IFEKKOOAHEAX_STR-OIC_TRUCKN sy-vline      INTO ld_text SEPARATED BY SPACE.

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