ABAP Select data from SAP table FKKPDREP_DISPL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKPDREP_DISPL
*  INTO TABLE @DATA(IT_FKKPDREP_DISPL2).
*--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_FKKPDREP_DISPL INDEX 1 INTO DATA(WA_FKKPDREP_DISPL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKPDREP_DISPL>-SELKEY = 1.
<FKKPDREP_DISPL>-PERIOD = 1.
<FKKPDREP_DISPL>-BUKRS = 1.
<FKKPDREP_DISPL>-GSBER = 1.
<FKKPDREP_DISPL>-SPART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKPDREP_DISPL-VARKY, sy-vline,
  WA_FKKPDREP_DISPL-WAERS, sy-vline,
  WA_FKKPDREP_DISPL-ATYPEID, sy-vline,
  WA_FKKPDREP_DISPL-ATYPETXT, sy-vline,
  WA_FKKPDREP_DISPL-01, sy-vline,
  WA_FKKPDREP_DISPL-02, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKPDREP_DISPL 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_FKKPDREP_DISPL 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_FKKPDREP_DISPL INTO WA_FKKPDREP_DISPL.


*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 PERKK, internal->external for field PERIOD
CALL FUNCTION 'CONVERSION_EXIT_PERKK_OUTPUT'
  EXPORTING
    input =                      WA_FKKPDREP_DISPL-PERIOD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKPDREP_DISPL-PERIOD.
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_FKKPDREP_DISPL_STR, 
SELKEY TYPE STRING,
PERIOD TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
SPART TYPE STRING,
VARKY TYPE STRING,
WAERS TYPE STRING,
ATYPEID TYPE STRING,
ATYPETXT TYPE STRING,
01 TYPE STRING,
02 TYPE STRING,
03 TYPE STRING,
04 TYPE STRING,
05 TYPE STRING,
06 TYPE STRING,
07 TYPE STRING,
08 TYPE STRING,
09 TYPE STRING,
10 TYPE STRING,
11 TYPE STRING,
12 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKPDREP_DISPL_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_FKKPDREP_DISPL_STR-SELKEY sy-vline 
WA_FKKPDREP_DISPL_STR-PERIOD sy-vline 
WA_FKKPDREP_DISPL_STR-BUKRS sy-vline 
WA_FKKPDREP_DISPL_STR-GSBER sy-vline 
WA_FKKPDREP_DISPL_STR-SPART sy-vline 
WA_FKKPDREP_DISPL_STR-VARKY sy-vline 
WA_FKKPDREP_DISPL_STR-WAERS sy-vline 
WA_FKKPDREP_DISPL_STR-ATYPEID sy-vline 
WA_FKKPDREP_DISPL_STR-ATYPETXT sy-vline 
WA_FKKPDREP_DISPL_STR-01 sy-vline 
WA_FKKPDREP_DISPL_STR-02 sy-vline 
WA_FKKPDREP_DISPL_STR-03 sy-vline 
WA_FKKPDREP_DISPL_STR-04 sy-vline 
WA_FKKPDREP_DISPL_STR-05 sy-vline 
WA_FKKPDREP_DISPL_STR-06 sy-vline 
WA_FKKPDREP_DISPL_STR-07 sy-vline 
WA_FKKPDREP_DISPL_STR-08 sy-vline 
WA_FKKPDREP_DISPL_STR-09 sy-vline 
WA_FKKPDREP_DISPL_STR-10 sy-vline 
WA_FKKPDREP_DISPL_STR-11 sy-vline 
WA_FKKPDREP_DISPL_STR-12 sy-vline      INTO ld_text SEPARATED BY SPACE.

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