ABAP Select data from SAP table DFKK_ACCADJ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKK_ACCADJ
*  INTO TABLE @DATA(IT_DFKK_ACCADJ2).
*--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_DFKK_ACCADJ INDEX 1 INTO DATA(WA_DFKK_ACCADJ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKK_ACCADJ>-MANDT = 1.
<DFKK_ACCADJ>-KEY_DATE = 1.
<DFKK_ACCADJ>-NAME = 1.
<DFKK_ACCADJ>-LAUFNR = 1.
<DFKK_ACCADJ>-HKONT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKK_ACCADJ-BUKRS, sy-vline,
  WA_DFKK_ACCADJ-GSBER, sy-vline,
  WA_DFKK_ACCADJ-SEGMENT, sy-vline,
  WA_DFKK_ACCADJ-VBUND, sy-vline,
  WA_DFKK_ACCADJ-PRCTR, sy-vline,
  WA_DFKK_ACCADJ-WAERW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKK_ACCADJ 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_DFKK_ACCADJ 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_DFKK_ACCADJ INTO WA_DFKK_ACCADJ.


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

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

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

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

*Conversion exit ALPHA, internal->external for field OPBEL1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKK_ACCADJ-OPBEL1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKK_ACCADJ-OPBEL1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OPBEL2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKK_ACCADJ-OPBEL2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKK_ACCADJ-OPBEL2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKK_ACCADJ-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKK_ACCADJ-RLDNR.
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_DFKK_ACCADJ_STR, 
MANDT TYPE STRING,
KEY_DATE TYPE STRING,
NAME TYPE STRING,
LAUFNR TYPE STRING,
HKONT TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
SEGMENT TYPE STRING,
VBUND TYPE STRING,
PRCTR TYPE STRING,
WAERW TYPE STRING,
HERKF TYPE STRING,
BETRW TYPE STRING,
BETRH TYPE STRING,
WAERS TYPE STRING,
ERNAM TYPE STRING,
DATUM TYPE STRING,
ZEIT TYPE STRING,
OPBEL1 TYPE STRING,
OPBEL2 TYPE STRING,
OPUPK TYPE STRING,
WAER_NUM TYPE STRING,
CURTP TYPE STRING,
BWBER TYPE STRING,
RLDNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKK_ACCADJ_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_DFKK_ACCADJ_STR-MANDT sy-vline 
WA_DFKK_ACCADJ_STR-KEY_DATE sy-vline 
WA_DFKK_ACCADJ_STR-NAME sy-vline 
WA_DFKK_ACCADJ_STR-LAUFNR sy-vline 
WA_DFKK_ACCADJ_STR-HKONT sy-vline 
WA_DFKK_ACCADJ_STR-BUKRS sy-vline 
WA_DFKK_ACCADJ_STR-GSBER sy-vline 
WA_DFKK_ACCADJ_STR-SEGMENT sy-vline 
WA_DFKK_ACCADJ_STR-VBUND sy-vline 
WA_DFKK_ACCADJ_STR-PRCTR sy-vline 
WA_DFKK_ACCADJ_STR-WAERW sy-vline 
WA_DFKK_ACCADJ_STR-HERKF sy-vline 
WA_DFKK_ACCADJ_STR-BETRW sy-vline 
WA_DFKK_ACCADJ_STR-BETRH sy-vline 
WA_DFKK_ACCADJ_STR-WAERS sy-vline 
WA_DFKK_ACCADJ_STR-ERNAM sy-vline 
WA_DFKK_ACCADJ_STR-DATUM sy-vline 
WA_DFKK_ACCADJ_STR-ZEIT sy-vline 
WA_DFKK_ACCADJ_STR-OPBEL1 sy-vline 
WA_DFKK_ACCADJ_STR-OPBEL2 sy-vline 
WA_DFKK_ACCADJ_STR-OPUPK sy-vline 
WA_DFKK_ACCADJ_STR-WAER_NUM sy-vline 
WA_DFKK_ACCADJ_STR-CURTP sy-vline 
WA_DFKK_ACCADJ_STR-BWBER sy-vline 
WA_DFKK_ACCADJ_STR-RLDNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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