ABAP Select data from SAP table OIK_E1OILST_MOD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP OIK_E1OILST_MOD 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 OIK_E1OILST_MOD. 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 OIK_E1OILST_MOD 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_OIK_E1OILST_MOD TYPE STANDARD TABLE OF OIK_E1OILST_MOD,
      WA_OIK_E1OILST_MOD TYPE OIK_E1OILST_MOD,
      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: <OIK_E1OILST_MOD> TYPE OIK_E1OILST_MOD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_OIK_E1OILST_MOD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM OIK_E1OILST_MOD
  INTO TABLE IT_OIK_E1OILST_MOD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIK_E1OILST_MOD
*  INTO TABLE @DATA(IT_OIK_E1OILST_MOD2).
*--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_OIK_E1OILST_MOD INDEX 1 INTO DATA(WA_OIK_E1OILST_MOD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_OIK_E1OILST_MOD ASSIGNING <OIK_E1OILST_MOD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIK_E1OILST_MOD>-TSNUM = 1.
<OIK_E1OILST_MOD>-TSTYP = 1.
<OIK_E1OILST_MOD>-TSRFO = 1.
<OIK_E1OILST_MOD>-VEH_NR = 1.
<OIK_E1OILST_MOD>-ELUPD = 1.

ENDLOOP.

LOOP AT IT_OIK_E1OILST_MOD INTO WA_OIK_E1OILST_MOD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIK_E1OILST_MOD-ROUTE, sy-vline,
  WA_OIK_E1OILST_MOD-VSART, sy-vline,
  WA_OIK_E1OILST_MOD-LAUFK, sy-vline,
  WA_OIK_E1OILST_MOD-ADRNA, sy-vline,
  WA_OIK_E1OILST_MOD-KNOTA, sy-vline,
  WA_OIK_E1OILST_MOD-VSTEL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIK_E1OILST_MOD 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_OIK_E1OILST_MOD 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_OIK_E1OILST_MOD INTO WA_OIK_E1OILST_MOD.


*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 VEHICLE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIK_E1OILST_MOD-VEHICLE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIK_E1OILST_MOD-VEHICLE.
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_OIK_E1OILST_MOD_STR, 
TSNUM TYPE STRING,
TSTYP TYPE STRING,
TSRFO TYPE STRING,
VEH_NR TYPE STRING,
ELUPD TYPE STRING,
ROUTE TYPE STRING,
VSART TYPE STRING,
LAUFK TYPE STRING,
ADRNA TYPE STRING,
KNOTA TYPE STRING,
VSTEL TYPE STRING,
LSTEL TYPE STRING,
WERKA TYPE STRING,
LGORTA TYPE STRING,
KUNNA TYPE STRING,
LIFNA TYPE STRING,
ADRNZ TYPE STRING,
KNOTZ TYPE STRING,
VSTEZ TYPE STRING,
LSTEZ TYPE STRING,
WERKZ TYPE STRING,
LGORTZ TYPE STRING,
KUNNZ TYPE STRING,
LIFNZ TYPE STRING,
TDLNR TYPE STRING,
DISTZ TYPE STRING,
MEDST TYPE STRING,
OIG_GESZTD TYPE STRING,
OIG_FAHZTD TYPE STRING,
MEIZT TYPE STRING,
ADRKNZA TYPE STRING,
KUNABLA TYPE STRING,
ADRKNZZ TYPE STRING,
KUNABLZ TYPE STRING,
FRKRL TYPE STRING,
SKALSM TYPE STRING,
FBSTA TYPE STRING,
ARSTA TYPE STRING,
VEH_IND TYPE STRING,
CARR_ROUT TYPE STRING,
TSTYP_TXT TYPE STRING,
DEPFLAG TYPE STRING,
DESTFLAG TYPE STRING,
FRKRLFLAG TYPE STRING,
DESCNODEA TYPE STRING,
DESCNODEZ TYPE STRING,
UPDATEFLAG TYPE STRING,
VEHICLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIK_E1OILST_MOD_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_OIK_E1OILST_MOD_STR-TSNUM sy-vline 
WA_OIK_E1OILST_MOD_STR-TSTYP sy-vline 
WA_OIK_E1OILST_MOD_STR-TSRFO sy-vline 
WA_OIK_E1OILST_MOD_STR-VEH_NR sy-vline 
WA_OIK_E1OILST_MOD_STR-ELUPD sy-vline 
WA_OIK_E1OILST_MOD_STR-ROUTE sy-vline 
WA_OIK_E1OILST_MOD_STR-VSART sy-vline 
WA_OIK_E1OILST_MOD_STR-LAUFK sy-vline 
WA_OIK_E1OILST_MOD_STR-ADRNA sy-vline 
WA_OIK_E1OILST_MOD_STR-KNOTA sy-vline 
WA_OIK_E1OILST_MOD_STR-VSTEL sy-vline 
WA_OIK_E1OILST_MOD_STR-LSTEL sy-vline 
WA_OIK_E1OILST_MOD_STR-WERKA sy-vline 
WA_OIK_E1OILST_MOD_STR-LGORTA sy-vline 
WA_OIK_E1OILST_MOD_STR-KUNNA sy-vline 
WA_OIK_E1OILST_MOD_STR-LIFNA sy-vline 
WA_OIK_E1OILST_MOD_STR-ADRNZ sy-vline 
WA_OIK_E1OILST_MOD_STR-KNOTZ sy-vline 
WA_OIK_E1OILST_MOD_STR-VSTEZ sy-vline 
WA_OIK_E1OILST_MOD_STR-LSTEZ sy-vline 
WA_OIK_E1OILST_MOD_STR-WERKZ sy-vline 
WA_OIK_E1OILST_MOD_STR-LGORTZ sy-vline 
WA_OIK_E1OILST_MOD_STR-KUNNZ sy-vline 
WA_OIK_E1OILST_MOD_STR-LIFNZ sy-vline 
WA_OIK_E1OILST_MOD_STR-TDLNR sy-vline 
WA_OIK_E1OILST_MOD_STR-DISTZ sy-vline 
WA_OIK_E1OILST_MOD_STR-MEDST sy-vline 
WA_OIK_E1OILST_MOD_STR-OIG_GESZTD sy-vline 
WA_OIK_E1OILST_MOD_STR-OIG_FAHZTD sy-vline 
WA_OIK_E1OILST_MOD_STR-MEIZT sy-vline 
WA_OIK_E1OILST_MOD_STR-ADRKNZA sy-vline 
WA_OIK_E1OILST_MOD_STR-KUNABLA sy-vline 
WA_OIK_E1OILST_MOD_STR-ADRKNZZ sy-vline 
WA_OIK_E1OILST_MOD_STR-KUNABLZ sy-vline 
WA_OIK_E1OILST_MOD_STR-FRKRL sy-vline 
WA_OIK_E1OILST_MOD_STR-SKALSM sy-vline 
WA_OIK_E1OILST_MOD_STR-FBSTA sy-vline 
WA_OIK_E1OILST_MOD_STR-ARSTA sy-vline 
WA_OIK_E1OILST_MOD_STR-VEH_IND sy-vline 
WA_OIK_E1OILST_MOD_STR-CARR_ROUT sy-vline 
WA_OIK_E1OILST_MOD_STR-TSTYP_TXT sy-vline 
WA_OIK_E1OILST_MOD_STR-DEPFLAG sy-vline 
WA_OIK_E1OILST_MOD_STR-DESTFLAG sy-vline 
WA_OIK_E1OILST_MOD_STR-FRKRLFLAG sy-vline 
WA_OIK_E1OILST_MOD_STR-DESCNODEA sy-vline 
WA_OIK_E1OILST_MOD_STR-DESCNODEZ sy-vline 
WA_OIK_E1OILST_MOD_STR-UPDATEFLAG sy-vline 
WA_OIK_E1OILST_MOD_STR-VEHICLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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