ABAP Select data from SAP table OILKOMDLGN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OILKOMDLGN
*  INTO TABLE @DATA(IT_OILKOMDLGN2).
*--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_OILKOMDLGN INDEX 1 INTO DATA(WA_OILKOMDLGN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OILKOMDLGN>-OIHANTYP = 1.
<OILKOMDLGN>-OITAXFROM = 1.
<OILKOMDLGN>-OITAXTO = 1.
<OILKOMDLGN>-OITAXGRP = 1.
<OILKOMDLGN>-OITRKNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OILKOMDLGN-OITRKJR, sy-vline,
  WA_OILKOMDLGN-OIEXTNR, sy-vline,
  WA_OILKOMDLGN-OIITMNR, sy-vline,
  WA_OILKOMDLGN-OIFTIND, sy-vline,
  WA_OILKOMDLGN-OIPRIOP, sy-vline,
  WA_OILKOMDLGN-OITRIND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OILKOMDLGN 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_OILKOMDLGN 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_OILKOMDLGN INTO WA_OILKOMDLGN.


*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 OITRKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OILKOMDLGN-OITRKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OILKOMDLGN-OITRKNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field OIH_LCFOL_GI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OILKOMDLGN-OIH_LCFOL_GI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OILKOMDLGN-OIH_LCFOL_GI.
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_OILKOMDLGN_STR, 
OIHANTYP TYPE STRING,
OITAXFROM TYPE STRING,
OITAXTO TYPE STRING,
OITAXGRP TYPE STRING,
OITRKNR TYPE STRING,
OITRKJR TYPE STRING,
OIEXTNR TYPE STRING,
OIITMNR TYPE STRING,
OIFTIND TYPE STRING,
OIPRIOP TYPE STRING,
OITRIND TYPE STRING,
OIGHNDL TYPE STRING,
OIUMBAR 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,
OIHPIPEVAL TYPE STRING,
OICHLIFNR TYPE STRING,
OICHDCITYC TYPE STRING,
OICHDCOUNC TYPE STRING,
OICHDREGIO TYPE STRING,
OICHDLAND1 TYPE STRING,
OICHOCITYC TYPE STRING,
OICHOCOUNC TYPE STRING,
OICHOREGIO TYPE STRING,
OICHOLAND1 TYPE STRING,
OICHPORGIN TYPE STRING,
OICHPDESTN TYPE STRING,
OICHPTRIP TYPE STRING,
OICHPBATCH TYPE STRING,
OICHMOT TYPE STRING,
OICHAORGIN TYPE STRING,
OICHADESTN TYPE STRING,
OICHTRUCKN TYPE STRING,
OIDHEXTBOL TYPE STRING,
OIDHMISCDL TYPE STRING,
OID_EXTBOL TYPE STRING,
OID_MISCDL TYPE STRING,
OIMBPOS TYPE STRING,
OIINEX TYPE STRING,
OIPRICIE TYPE STRING,
OIOILCON TYPE STRING,
OIEDOK TYPE STRING,
OIEDBAL TYPE STRING,
OIEDBALM TYPE STRING,
OICERTF1 TYPE STRING,
OIDATFM1 TYPE STRING,
OIDATTO1 TYPE STRING,
OIH_LICTP TYPE STRING,
OIH_LICIN TYPE STRING,
OIH_LCFOL TYPE STRING,
OIH_FOLQTY TYPE STRING,
OIEDOK_GI TYPE STRING,
OIEDBAL_GI TYPE STRING,
OIEDBALM_GI TYPE STRING,
OICERTF1_GI TYPE STRING,
OIDATFM1_GI TYPE STRING,
OIDATTO1_GI TYPE STRING,
OIH_LICTP_GI TYPE STRING,
OIH_LICIN_GI TYPE STRING,
OIH_LCFOL_GI TYPE STRING,
OIH_FOLQTY_GI TYPE STRING,
OIHANTYP_GI TYPE STRING,
OITAXGRP_GI TYPE STRING,
OIINEX_GI TYPE STRING,
OITAXFROM_GI TYPE STRING,
OITAXTO_GI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OILKOMDLGN_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_OILKOMDLGN_STR-OIHANTYP sy-vline 
WA_OILKOMDLGN_STR-OITAXFROM sy-vline 
WA_OILKOMDLGN_STR-OITAXTO sy-vline 
WA_OILKOMDLGN_STR-OITAXGRP sy-vline 
WA_OILKOMDLGN_STR-OITRKNR sy-vline 
WA_OILKOMDLGN_STR-OITRKJR sy-vline 
WA_OILKOMDLGN_STR-OIEXTNR sy-vline 
WA_OILKOMDLGN_STR-OIITMNR sy-vline 
WA_OILKOMDLGN_STR-OIFTIND sy-vline 
WA_OILKOMDLGN_STR-OIPRIOP sy-vline 
WA_OILKOMDLGN_STR-OITRIND sy-vline 
WA_OILKOMDLGN_STR-OIGHNDL sy-vline 
WA_OILKOMDLGN_STR-OIUMBAR sy-vline 
WA_OILKOMDLGN_STR-OIPIPEVAL sy-vline 
WA_OILKOMDLGN_STR-OIC_LIFNR sy-vline 
WA_OILKOMDLGN_STR-OIC_DCITYC sy-vline 
WA_OILKOMDLGN_STR-OIC_DCOUNC sy-vline 
WA_OILKOMDLGN_STR-OIC_DREGIO sy-vline 
WA_OILKOMDLGN_STR-OIC_DLAND1 sy-vline 
WA_OILKOMDLGN_STR-OIC_OCITYC sy-vline 
WA_OILKOMDLGN_STR-OIC_OCOUNC sy-vline 
WA_OILKOMDLGN_STR-OIC_OREGIO sy-vline 
WA_OILKOMDLGN_STR-OIC_OLAND1 sy-vline 
WA_OILKOMDLGN_STR-OIC_PORGIN sy-vline 
WA_OILKOMDLGN_STR-OIC_PDESTN sy-vline 
WA_OILKOMDLGN_STR-OIC_PTRIP sy-vline 
WA_OILKOMDLGN_STR-OIC_PBATCH sy-vline 
WA_OILKOMDLGN_STR-OIC_MOT sy-vline 
WA_OILKOMDLGN_STR-OIC_AORGIN sy-vline 
WA_OILKOMDLGN_STR-OIC_ADESTN sy-vline 
WA_OILKOMDLGN_STR-OIC_TRUCKN sy-vline 
WA_OILKOMDLGN_STR-OIA_BASELO sy-vline 
WA_OILKOMDLGN_STR-OIHPIPEVAL sy-vline 
WA_OILKOMDLGN_STR-OICHLIFNR sy-vline 
WA_OILKOMDLGN_STR-OICHDCITYC sy-vline 
WA_OILKOMDLGN_STR-OICHDCOUNC sy-vline 
WA_OILKOMDLGN_STR-OICHDREGIO sy-vline 
WA_OILKOMDLGN_STR-OICHDLAND1 sy-vline 
WA_OILKOMDLGN_STR-OICHOCITYC sy-vline 
WA_OILKOMDLGN_STR-OICHOCOUNC sy-vline 
WA_OILKOMDLGN_STR-OICHOREGIO sy-vline 
WA_OILKOMDLGN_STR-OICHOLAND1 sy-vline 
WA_OILKOMDLGN_STR-OICHPORGIN sy-vline 
WA_OILKOMDLGN_STR-OICHPDESTN sy-vline 
WA_OILKOMDLGN_STR-OICHPTRIP sy-vline 
WA_OILKOMDLGN_STR-OICHPBATCH sy-vline 
WA_OILKOMDLGN_STR-OICHMOT sy-vline 
WA_OILKOMDLGN_STR-OICHAORGIN sy-vline 
WA_OILKOMDLGN_STR-OICHADESTN sy-vline 
WA_OILKOMDLGN_STR-OICHTRUCKN sy-vline 
WA_OILKOMDLGN_STR-OIDHEXTBOL sy-vline 
WA_OILKOMDLGN_STR-OIDHMISCDL sy-vline 
WA_OILKOMDLGN_STR-OID_EXTBOL sy-vline 
WA_OILKOMDLGN_STR-OID_MISCDL sy-vline 
WA_OILKOMDLGN_STR-OIMBPOS sy-vline 
WA_OILKOMDLGN_STR-OIINEX sy-vline 
WA_OILKOMDLGN_STR-OIPRICIE sy-vline 
WA_OILKOMDLGN_STR-OIOILCON sy-vline 
WA_OILKOMDLGN_STR-OIEDOK sy-vline 
WA_OILKOMDLGN_STR-OIEDBAL sy-vline 
WA_OILKOMDLGN_STR-OIEDBALM sy-vline 
WA_OILKOMDLGN_STR-OICERTF1 sy-vline 
WA_OILKOMDLGN_STR-OIDATFM1 sy-vline 
WA_OILKOMDLGN_STR-OIDATTO1 sy-vline 
WA_OILKOMDLGN_STR-OIH_LICTP sy-vline 
WA_OILKOMDLGN_STR-OIH_LICIN sy-vline 
WA_OILKOMDLGN_STR-OIH_LCFOL sy-vline 
WA_OILKOMDLGN_STR-OIH_FOLQTY sy-vline 
WA_OILKOMDLGN_STR-OIEDOK_GI sy-vline 
WA_OILKOMDLGN_STR-OIEDBAL_GI sy-vline 
WA_OILKOMDLGN_STR-OIEDBALM_GI sy-vline 
WA_OILKOMDLGN_STR-OICERTF1_GI sy-vline 
WA_OILKOMDLGN_STR-OIDATFM1_GI sy-vline 
WA_OILKOMDLGN_STR-OIDATTO1_GI sy-vline 
WA_OILKOMDLGN_STR-OIH_LICTP_GI sy-vline 
WA_OILKOMDLGN_STR-OIH_LICIN_GI sy-vline 
WA_OILKOMDLGN_STR-OIH_LCFOL_GI sy-vline 
WA_OILKOMDLGN_STR-OIH_FOLQTY_GI sy-vline 
WA_OILKOMDLGN_STR-OIHANTYP_GI sy-vline 
WA_OILKOMDLGN_STR-OITAXGRP_GI sy-vline 
WA_OILKOMDLGN_STR-OIINEX_GI sy-vline 
WA_OILKOMDLGN_STR-OITAXFROM_GI sy-vline 
WA_OILKOMDLGN_STR-OITAXTO_GI sy-vline      INTO ld_text SEPARATED BY SPACE.

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