ABAP Select data from SAP table IOEL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IOEL
*  INTO TABLE @DATA(IT_IOEL2).
*--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_IOEL INDEX 1 INTO DATA(WA_IOEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IOEL>-RSNUM = 1.
<IOEL>-RSPOS = 1.
<IOEL>-ETENR = 1.
<IOEL>-RSDAT = 1.
<IOEL>-RSART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IOEL-MATNR, sy-vline,
  WA_IOEL-WERKS, sy-vline,
  WA_IOEL-BERID, sy-vline,
  WA_IOEL-DAT00, sy-vline,
  WA_IOEL-SORT1, sy-vline,
  WA_IOEL-DELKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IOEL 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_IOEL 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_IOEL INTO WA_IOEL.


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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IOEL-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IOEL-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IOEL-GMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IOEL-GMEIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEIVT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IOEL-MEIVT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IOEL-MEIVT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEIVE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IOEL-MEIVE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IOEL-MEIVE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IOEL-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IOEL-MEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DELAY_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IOEL-DELAY_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IOEL-DELAY_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MPNMT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IOEL-MPNMT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IOEL-MPNMT.
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_IOEL_STR, 
RSNUM TYPE STRING,
RSPOS TYPE STRING,
ETENR TYPE STRING,
RSDAT TYPE STRING,
RSART TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
BERID TYPE STRING,
DAT00 TYPE STRING,
SORT1 TYPE STRING,
DELKZ TYPE STRING,
DELNR TYPE STRING,
DELPS TYPE STRING,
DELET TYPE STRING,
SOBKZ TYPE STRING,
SOBES TYPE STRING,
DBSKZ TYPE STRING,
KZKUP TYPE STRING,
PLUMI TYPE STRING,
SUMBD TYPE STRING,
BAART TYPE STRING,
VERSB TYPE STRING,
ERR01 TYPE STRING,
PRIO1 TYPE STRING,
ERR02 TYPE STRING,
PRIO2 TYPE STRING,
UMDAT TYPE STRING,
LLPROBLEM TYPE STRING,
MNG01 TYPE STRING,
TOTAL TYPE STRING,
MEINS TYPE STRING,
DISST TYPE STRING,
FACTOR TYPE STRING,
EXTRA TYPE STRING,
WRK02 TYPE STRING,
NXTRS TYPE STRING,
MAKTX TYPE STRING,
DISPO TYPE STRING,
EKGRP TYPE STRING,
RESLO TYPE STRING,
GAMNG TYPE STRING,
GASMG TYPE STRING,
GMEIN TYPE STRING,
GLTRP TYPE STRING,
GSTRP TYPE STRING,
GSTRI TYPE STRING,
GLTRI TYPE STRING,
GETRI TYPE STRING,
GLTRS TYPE STRING,
GSTRS TYPE STRING,
AUART TYPE STRING,
VRZGT TYPE STRING,
MEIVT TYPE STRING,
VRZGE TYPE STRING,
MEIVE TYPE STRING,
MNGDF TYPE STRING,
MEINH TYPE STRING,
STTXT TYPE STRING,
RMNGA TYPE STRING,
FRERO TYPE STRING,
GWEMG TYPE STRING,
WBEST TYPE STRING,
KBEST TYPE STRING,
PBEST TYPE STRING,
FEVOR TYPE STRING,
STPRS TYPE STRING,
PEINH TYPE STRING,
AUSSS TYPE STRING,
DZEIT TYPE STRING,
PLIFZ TYPE STRING,
WZEIT TYPE STRING,
EISBE TYPE STRING,
XFEHL TYPE STRING,
ICON_DELAY TYPE STRING,
ICON_QUANT_DIFF TYPE STRING,
AUFVR TYPE STRING,
DAT02 TYPE STRING,
UMSKZ TYPE STRING,
NOREC TYPE STRING,
DELAY_ICON TYPE STRING,
DELAY_ME TYPE STRING,
DELAY_LEVEL TYPE STRING,
DELAY_SUM TYPE STRING,
DELAY_UNIT TYPE STRING,
SGT_RCAT TYPE STRING,
SGT_SCAT TYPE STRING,
MPNMT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IOEL_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_IOEL_STR-RSNUM sy-vline 
WA_IOEL_STR-RSPOS sy-vline 
WA_IOEL_STR-ETENR sy-vline 
WA_IOEL_STR-RSDAT sy-vline 
WA_IOEL_STR-RSART sy-vline 
WA_IOEL_STR-MATNR sy-vline 
WA_IOEL_STR-WERKS sy-vline 
WA_IOEL_STR-BERID sy-vline 
WA_IOEL_STR-DAT00 sy-vline 
WA_IOEL_STR-SORT1 sy-vline 
WA_IOEL_STR-DELKZ sy-vline 
WA_IOEL_STR-DELNR sy-vline 
WA_IOEL_STR-DELPS sy-vline 
WA_IOEL_STR-DELET sy-vline 
WA_IOEL_STR-SOBKZ sy-vline 
WA_IOEL_STR-SOBES sy-vline 
WA_IOEL_STR-DBSKZ sy-vline 
WA_IOEL_STR-KZKUP sy-vline 
WA_IOEL_STR-PLUMI sy-vline 
WA_IOEL_STR-SUMBD sy-vline 
WA_IOEL_STR-BAART sy-vline 
WA_IOEL_STR-VERSB sy-vline 
WA_IOEL_STR-ERR01 sy-vline 
WA_IOEL_STR-PRIO1 sy-vline 
WA_IOEL_STR-ERR02 sy-vline 
WA_IOEL_STR-PRIO2 sy-vline 
WA_IOEL_STR-UMDAT sy-vline 
WA_IOEL_STR-LLPROBLEM sy-vline 
WA_IOEL_STR-MNG01 sy-vline 
WA_IOEL_STR-TOTAL sy-vline 
WA_IOEL_STR-MEINS sy-vline 
WA_IOEL_STR-DISST sy-vline 
WA_IOEL_STR-FACTOR sy-vline 
WA_IOEL_STR-EXTRA sy-vline 
WA_IOEL_STR-WRK02 sy-vline 
WA_IOEL_STR-NXTRS sy-vline 
WA_IOEL_STR-MAKTX sy-vline 
WA_IOEL_STR-DISPO sy-vline 
WA_IOEL_STR-EKGRP sy-vline 
WA_IOEL_STR-RESLO sy-vline 
WA_IOEL_STR-GAMNG sy-vline 
WA_IOEL_STR-GASMG sy-vline 
WA_IOEL_STR-GMEIN sy-vline 
WA_IOEL_STR-GLTRP sy-vline 
WA_IOEL_STR-GSTRP sy-vline 
WA_IOEL_STR-GSTRI sy-vline 
WA_IOEL_STR-GLTRI sy-vline 
WA_IOEL_STR-GETRI sy-vline 
WA_IOEL_STR-GLTRS sy-vline 
WA_IOEL_STR-GSTRS sy-vline 
WA_IOEL_STR-AUART sy-vline 
WA_IOEL_STR-VRZGT sy-vline 
WA_IOEL_STR-MEIVT sy-vline 
WA_IOEL_STR-VRZGE sy-vline 
WA_IOEL_STR-MEIVE sy-vline 
WA_IOEL_STR-MNGDF sy-vline 
WA_IOEL_STR-MEINH sy-vline 
WA_IOEL_STR-STTXT sy-vline 
WA_IOEL_STR-RMNGA sy-vline 
WA_IOEL_STR-FRERO sy-vline 
WA_IOEL_STR-GWEMG sy-vline 
WA_IOEL_STR-WBEST sy-vline 
WA_IOEL_STR-KBEST sy-vline 
WA_IOEL_STR-PBEST sy-vline 
WA_IOEL_STR-FEVOR sy-vline 
WA_IOEL_STR-STPRS sy-vline 
WA_IOEL_STR-PEINH sy-vline 
WA_IOEL_STR-AUSSS sy-vline 
WA_IOEL_STR-DZEIT sy-vline 
WA_IOEL_STR-PLIFZ sy-vline 
WA_IOEL_STR-WZEIT sy-vline 
WA_IOEL_STR-EISBE sy-vline 
WA_IOEL_STR-XFEHL sy-vline 
WA_IOEL_STR-ICON_DELAY sy-vline 
WA_IOEL_STR-ICON_QUANT_DIFF sy-vline 
WA_IOEL_STR-AUFVR sy-vline 
WA_IOEL_STR-DAT02 sy-vline 
WA_IOEL_STR-UMSKZ sy-vline 
WA_IOEL_STR-NOREC sy-vline 
WA_IOEL_STR-DELAY_ICON sy-vline 
WA_IOEL_STR-DELAY_ME sy-vline 
WA_IOEL_STR-DELAY_LEVEL sy-vline 
WA_IOEL_STR-DELAY_SUM sy-vline 
WA_IOEL_STR-DELAY_UNIT sy-vline 
WA_IOEL_STR-SGT_RCAT sy-vline 
WA_IOEL_STR-SGT_SCAT sy-vline 
WA_IOEL_STR-MPNMT sy-vline      INTO ld_text SEPARATED BY SPACE.

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