ABAP Select data from SAP table FKK_PREP_BAL_CHG_DATA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FKK_PREP_BAL_CHG_DATA 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_BAL_CHG_DATA. 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_BAL_CHG_DATA 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_BAL_CHG_DATA TYPE STANDARD TABLE OF FKK_PREP_BAL_CHG_DATA,
      WA_FKK_PREP_BAL_CHG_DATA TYPE FKK_PREP_BAL_CHG_DATA,
      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_BAL_CHG_DATA> TYPE FKK_PREP_BAL_CHG_DATA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK_PREP_BAL_CHG_DATA
*  INTO TABLE @DATA(IT_FKK_PREP_BAL_CHG_DATA2).
*--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_BAL_CHG_DATA INDEX 1 INTO DATA(WA_FKK_PREP_BAL_CHG_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK_PREP_BAL_CHG_DATA>-PPACC = 1.
<FKK_PREP_BAL_CHG_DATA>-PREPR = 1.
<FKK_PREP_BAL_CHG_DATA>-GPART = 1.
<FKK_PREP_BAL_CHG_DATA>-BETRW = 1.
<FKK_PREP_BAL_CHG_DATA>-BETRW_ADD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK_PREP_BAL_CHG_DATA-WAERS, sy-vline,
  WA_FKK_PREP_BAL_CHG_DATA-WAERS_PP, sy-vline,
  WA_FKK_PREP_BAL_CHG_DATA-REFPK, sy-vline,
  WA_FKK_PREP_BAL_CHG_DATA-RFPCN, sy-vline,
  WA_FKK_PREP_BAL_CHG_DATA-XRVRF, sy-vline,
  WA_FKK_PREP_BAL_CHG_DATA-PPRSN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK_PREP_BAL_CHG_DATA 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_BAL_CHG_DATA 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_BAL_CHG_DATA INTO WA_FKK_PREP_BAL_CHG_DATA.


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

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

*Conversion exit ALPHA, internal->external for field PPDOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_PREP_BAL_CHG_DATA-PPDOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_PREP_BAL_CHG_DATA-PPDOC.
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_BAL_CHG_DATA_STR, 
PPACC TYPE STRING,
PREPR TYPE STRING,
GPART TYPE STRING,
BETRW TYPE STRING,
BETRW_ADD TYPE STRING,
WAERS TYPE STRING,
WAERS_PP TYPE STRING,
REFPK TYPE STRING,
RFPCN TYPE STRING,
XRVRF TYPE STRING,
PPRSN TYPE STRING,
PPDOC TYPE STRING,
CRDRS TYPE STRING,
PPNOT TYPE STRING,
TUMTH TYPE STRING,
TULOC TYPE STRING,
BKVID TYPE STRING,
CRDID TYPE STRING,
CGUID TYPE STRING,
TUSE1 TYPE STRING,
CNTU1 TYPE STRING,
TUSE2 TYPE STRING,
CNTU2 TYPE STRING,
TUSE3 TYPE STRING,
CNTU3 TYPE STRING,
PPRND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK_PREP_BAL_CHG_DATA_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_BAL_CHG_DATA_STR-PPACC sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-PREPR sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-GPART sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-BETRW sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-BETRW_ADD sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-WAERS sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-WAERS_PP sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-REFPK sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-RFPCN sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-XRVRF sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-PPRSN sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-PPDOC sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-CRDRS sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-PPNOT sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-TUMTH sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-TULOC sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-BKVID sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-CRDID sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-CGUID sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-TUSE1 sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-CNTU1 sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-TUSE2 sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-CNTU2 sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-TUSE3 sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_STR-CNTU3 sy-vline 
WA_FKK_PREP_BAL_CHG_DATA_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.