ABAP Select data from SAP table DFKKOBLID into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKOBLID
*  INTO TABLE @DATA(IT_DFKKOBLID2).
*--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_DFKKOBLID INDEX 1 INTO DATA(WA_DFKKOBLID2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKOBLID>-MANDT = 1.
<DFKKOBLID>-PRTID = 1.
<DFKKOBLID>-CRSGT = 1.
<DFKKOBLID>-OBLTP = 1.
<DFKKOBLID>-GPART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKOBLID-CPUDT, sy-vline,
  WA_DFKKOBLID-CPUTM, sy-vline,
  WA_DFKKOBLID-BETOB, sy-vline,
  WA_DFKKOBLID-WAERS, sy-vline,
  WA_DFKKOBLID-UPDID, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_DFKKOBLID 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_DFKKOBLID 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_DFKKOBLID INTO WA_DFKKOBLID.


*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 GPART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKOBLID-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKOBLID-GPART.
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_DFKKOBLID_STR, 
MANDT TYPE STRING,
PRTID TYPE STRING,
CRSGT TYPE STRING,
OBLTP TYPE STRING,
GPART TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
BETOB TYPE STRING,
WAERS TYPE STRING,
UPDID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKOBLID_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_DFKKOBLID_STR-MANDT sy-vline 
WA_DFKKOBLID_STR-PRTID sy-vline 
WA_DFKKOBLID_STR-CRSGT sy-vline 
WA_DFKKOBLID_STR-OBLTP sy-vline 
WA_DFKKOBLID_STR-GPART sy-vline 
WA_DFKKOBLID_STR-CPUDT sy-vline 
WA_DFKKOBLID_STR-CPUTM sy-vline 
WA_DFKKOBLID_STR-BETOB sy-vline 
WA_DFKKOBLID_STR-WAERS sy-vline 
WA_DFKKOBLID_STR-UPDID sy-vline      INTO ld_text SEPARATED BY SPACE.

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