ABAP Select data from SAP table FKK_PREP_POST into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK_PREP_POST
*  INTO TABLE @DATA(IT_FKK_PREP_POST2).
*--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_FKK_PREP_POST INDEX 1 INTO DATA(WA_FKK_PREP_POST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK_PREP_POST>-GPART = 1.
<FKK_PREP_POST>-VKONT = 1.
<FKK_PREP_POST>-PPACC = 1.
<FKK_PREP_POST>-BETRW = 1.
<FKK_PREP_POST>-WAERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK_PREP_POST-BUKRS, sy-vline,
  WA_FKK_PREP_POST-PPRSN, sy-vline,
  WA_FKK_PREP_POST-PPBVO, sy-vline,
  WA_FKK_PREP_POST-PPDOC, sy-vline,
  WA_FKK_PREP_POST-PYMET, sy-vline,
  WA_FKK_PREP_POST-BKVID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK_PREP_POST 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_FKK_PREP_POST 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_FKK_PREP_POST INTO WA_FKK_PREP_POST.


*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_FKK_PREP_POST-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_PREP_POST-GPART.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field PPACC_TAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_PREP_POST-PPACC_TAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_PREP_POST-PPACC_TAR.
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_FKK_PREP_POST_STR, 
GPART TYPE STRING,
VKONT TYPE STRING,
PPACC TYPE STRING,
BETRW TYPE STRING,
WAERS TYPE STRING,
BUKRS TYPE STRING,
PPRSN TYPE STRING,
PPBVO TYPE STRING,
PPDOC TYPE STRING,
PYMET TYPE STRING,
BKVID TYPE STRING,
CRDID TYPE STRING,
OPTXT TYPE STRING,
HERKF TYPE STRING,
APPLK TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
BLART TYPE STRING,
FIKEY TYPE STRING,
PPACC_TAR TYPE STRING,
PPRND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK_PREP_POST_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_FKK_PREP_POST_STR-GPART sy-vline 
WA_FKK_PREP_POST_STR-VKONT sy-vline 
WA_FKK_PREP_POST_STR-PPACC sy-vline 
WA_FKK_PREP_POST_STR-BETRW sy-vline 
WA_FKK_PREP_POST_STR-WAERS sy-vline 
WA_FKK_PREP_POST_STR-BUKRS sy-vline 
WA_FKK_PREP_POST_STR-PPRSN sy-vline 
WA_FKK_PREP_POST_STR-PPBVO sy-vline 
WA_FKK_PREP_POST_STR-PPDOC sy-vline 
WA_FKK_PREP_POST_STR-PYMET sy-vline 
WA_FKK_PREP_POST_STR-BKVID sy-vline 
WA_FKK_PREP_POST_STR-CRDID sy-vline 
WA_FKK_PREP_POST_STR-OPTXT sy-vline 
WA_FKK_PREP_POST_STR-HERKF sy-vline 
WA_FKK_PREP_POST_STR-APPLK sy-vline 
WA_FKK_PREP_POST_STR-BUDAT sy-vline 
WA_FKK_PREP_POST_STR-BLDAT sy-vline 
WA_FKK_PREP_POST_STR-BLART sy-vline 
WA_FKK_PREP_POST_STR-FIKEY sy-vline 
WA_FKK_PREP_POST_STR-PPACC_TAR sy-vline 
WA_FKK_PREP_POST_STR-PPRND sy-vline      INTO ld_text SEPARATED BY SPACE.

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