ABAP Select data from SAP table DFKK_BIT_TEST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DFKK_BIT_TEST 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_BIT_TEST. 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_BIT_TEST 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_BIT_TEST TYPE STANDARD TABLE OF DFKK_BIT_TEST,
      WA_DFKK_BIT_TEST TYPE DFKK_BIT_TEST,
      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_BIT_TEST> TYPE DFKK_BIT_TEST.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKK_BIT_TEST
*  INTO TABLE @DATA(IT_DFKK_BIT_TEST2).
*--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_BIT_TEST INDEX 1 INTO DATA(WA_DFKK_BIT_TEST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKK_BIT_TEST>-MANDT = 1.
<DFKK_BIT_TEST>-TAPPL = 1.
<DFKK_BIT_TEST>-TAREA = 1.
<DFKK_BIT_TEST>-BITNO = 1.
<DFKK_BIT_TEST>-MAKEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKK_BIT_TEST-GPART, sy-vline,
  WA_DFKK_BIT_TEST-VTREF, sy-vline,
  WA_DFKK_BIT_TEST-VTPOS, sy-vline,
  WA_DFKK_BIT_TEST-BITDATE, sy-vline,
  WA_DFKK_BIT_TEST-BITTIME, sy-vline,
  WA_DFKK_BIT_TEST-BITTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKK_BIT_TEST 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_BIT_TEST 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_BIT_TEST INTO WA_DFKK_BIT_TEST.


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

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

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

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

*Conversion exit ALPHA, internal->external for field AGRMT_INV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKK_BIT_TEST-AGRMT_INV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKK_BIT_TEST-AGRMT_INV.
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_BIT_TEST_STR, 
MANDT TYPE STRING,
TAPPL TYPE STRING,
TAREA TYPE STRING,
BITNO TYPE STRING,
MAKEY TYPE STRING,
GPART TYPE STRING,
VTREF TYPE STRING,
VTPOS TYPE STRING,
BITDATE TYPE STRING,
BITTIME TYPE STRING,
BITTYPE TYPE STRING,
BIT_AMOUNT TYPE STRING,
BIT_CURR TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
HVORG TYPE STRING,
TVORG TYPE STRING,
FILTER_OK TYPE STRING,
AGAST TYPE STRING,
AGASS TYPE STRING,
AGRMT_INV TYPE STRING,
SHOWL TYPE STRING,
LOGNO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKK_BIT_TEST_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_BIT_TEST_STR-MANDT sy-vline 
WA_DFKK_BIT_TEST_STR-TAPPL sy-vline 
WA_DFKK_BIT_TEST_STR-TAREA sy-vline 
WA_DFKK_BIT_TEST_STR-BITNO sy-vline 
WA_DFKK_BIT_TEST_STR-MAKEY sy-vline 
WA_DFKK_BIT_TEST_STR-GPART sy-vline 
WA_DFKK_BIT_TEST_STR-VTREF sy-vline 
WA_DFKK_BIT_TEST_STR-VTPOS sy-vline 
WA_DFKK_BIT_TEST_STR-BITDATE sy-vline 
WA_DFKK_BIT_TEST_STR-BITTIME sy-vline 
WA_DFKK_BIT_TEST_STR-BITTYPE sy-vline 
WA_DFKK_BIT_TEST_STR-BIT_AMOUNT sy-vline 
WA_DFKK_BIT_TEST_STR-BIT_CURR sy-vline 
WA_DFKK_BIT_TEST_STR-BUKRS sy-vline 
WA_DFKK_BIT_TEST_STR-GSBER sy-vline 
WA_DFKK_BIT_TEST_STR-HVORG sy-vline 
WA_DFKK_BIT_TEST_STR-TVORG sy-vline 
WA_DFKK_BIT_TEST_STR-FILTER_OK sy-vline 
WA_DFKK_BIT_TEST_STR-AGAST sy-vline 
WA_DFKK_BIT_TEST_STR-AGASS sy-vline 
WA_DFKK_BIT_TEST_STR-AGRMT_INV sy-vline 
WA_DFKK_BIT_TEST_STR-SHOWL sy-vline 
WA_DFKK_BIT_TEST_STR-LOGNO sy-vline      INTO ld_text SEPARATED BY SPACE.

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