ABAP Select data from SAP table FKKPREPACC_DI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKPREPACC_DI
*  INTO TABLE @DATA(IT_FKKPREPACC_DI2).
*--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_FKKPREPACC_DI INDEX 1 INTO DATA(WA_FKKPREPACC_DI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKPREPACC_DI>-GPART = 1.
<FKKPREPACC_DI>-VKONT = 1.
<FKKPREPACC_DI>-WAERS = 1.
<FKKPREPACC_DI>-PCLDT = 1.
<FKKPREPACC_DI>-CLODT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKPREPACC_DI-MINAM, sy-vline,
  WA_FKKPREPACC_DI-LIM1X, sy-vline,
  WA_FKKPREPACC_DI-LIM1A, sy-vline,
  WA_FKKPREPACC_DI-LIM2X, sy-vline,
  WA_FKKPREPACC_DI-LIM2A, sy-vline,
  WA_FKKPREPACC_DI-LIM3X, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKPREPACC_DI 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_FKKPREPACC_DI 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_FKKPREPACC_DI INTO WA_FKKPREPACC_DI.


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

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

*Conversion exit ALPHA, internal->external for field ABWRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKPREPACC_DI-ABWRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKPREPACC_DI-ABWRE.
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_FKKPREPACC_DI_STR, 
GPART TYPE STRING,
VKONT TYPE STRING,
WAERS TYPE STRING,
PCLDT TYPE STRING,
CLODT TYPE STRING,
MINAM TYPE STRING,
LIM1X TYPE STRING,
LIM1A TYPE STRING,
LIM2X TYPE STRING,
LIM2A TYPE STRING,
LIM3X TYPE STRING,
LIM3A TYPE STRING,
ABWRE TYPE STRING,
PPPTB TYPE STRING,
BNKID TYPE STRING,
CRDID TYPE STRING,
CCINS TYPE STRING,
CCNUM TYPE STRING,
CCNAME TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
MNDID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKPREPACC_DI_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_FKKPREPACC_DI_STR-GPART sy-vline 
WA_FKKPREPACC_DI_STR-VKONT sy-vline 
WA_FKKPREPACC_DI_STR-WAERS sy-vline 
WA_FKKPREPACC_DI_STR-PCLDT sy-vline 
WA_FKKPREPACC_DI_STR-CLODT sy-vline 
WA_FKKPREPACC_DI_STR-MINAM sy-vline 
WA_FKKPREPACC_DI_STR-LIM1X sy-vline 
WA_FKKPREPACC_DI_STR-LIM1A sy-vline 
WA_FKKPREPACC_DI_STR-LIM2X sy-vline 
WA_FKKPREPACC_DI_STR-LIM2A sy-vline 
WA_FKKPREPACC_DI_STR-LIM3X sy-vline 
WA_FKKPREPACC_DI_STR-LIM3A sy-vline 
WA_FKKPREPACC_DI_STR-ABWRE sy-vline 
WA_FKKPREPACC_DI_STR-PPPTB sy-vline 
WA_FKKPREPACC_DI_STR-BNKID sy-vline 
WA_FKKPREPACC_DI_STR-CRDID sy-vline 
WA_FKKPREPACC_DI_STR-CCINS sy-vline 
WA_FKKPREPACC_DI_STR-CCNUM sy-vline 
WA_FKKPREPACC_DI_STR-CCNAME sy-vline 
WA_FKKPREPACC_DI_STR-DATAB sy-vline 
WA_FKKPREPACC_DI_STR-DATBI sy-vline 
WA_FKKPREPACC_DI_STR-MNDID sy-vline      INTO ld_text SEPARATED BY SPACE.

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