ABAP Select data from SAP table FKKEPOS_PAR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKEPOS_PAR
*  INTO TABLE @DATA(IT_FKKEPOS_PAR2).
*--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_FKKEPOS_PAR INDEX 1 INTO DATA(WA_FKKEPOS_PAR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKEPOS_PAR>-810 = 1.
<FKKEPOS_PAR>-812 = 1.
<FKKEPOS_PAR>-813 = 1.
<FKKEPOS_PAR>-814 = 1.
<FKKEPOS_PAR>-815 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKEPOS_PAR-816, sy-vline,
  WA_FKKEPOS_PAR-816_BAL, sy-vline,
  WA_FKKEPOS_PAR-817, sy-vline,
  WA_FKKEPOS_PAR-818, sy-vline,
  WA_FKKEPOS_PAR-819, sy-vline,
  WA_FKKEPOS_PAR-820, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKEPOS_PAR 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_FKKEPOS_PAR 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_FKKEPOS_PAR INTO WA_FKKEPOS_PAR.


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

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

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

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

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKEPOS_PAR-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKEPOS_PAR-VKONT.
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_FKKEPOS_PAR_STR, 
810 TYPE STRING,
812 TYPE STRING,
813 TYPE STRING,
814 TYPE STRING,
815 TYPE STRING,
816 TYPE STRING,
816_BAL TYPE STRING,
817 TYPE STRING,
818 TYPE STRING,
819 TYPE STRING,
820 TYPE STRING,
8US TYPE STRING,
LSTYP TYPE STRING,
SRVAR TYPE STRING,
VAROP TYPE STRING,
SVVAR TYPE STRING,
BUKRS TYPE STRING,
VTREF TYPE STRING,
RATPL TYPE STRING,
SAMMR TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
821 TYPE STRING,
822 TYPE STRING,
823 TYPE STRING,
824 TYPE STRING,
825_OPALL TYPE STRING,
825_OPTOL TYPE STRING,
825_RPALL TYPE STRING,
825_RPTOL TYPE STRING,
825_CLALL TYPE STRING,
825_CLTOL TYPE STRING,
SUBAP TYPE STRING,
ARCDT TYPE STRING,
XKONT TYPE STRING,
826 TYPE STRING,
FPL9_DOWNP_CHR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKEPOS_PAR_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_FKKEPOS_PAR_STR-810 sy-vline 
WA_FKKEPOS_PAR_STR-812 sy-vline 
WA_FKKEPOS_PAR_STR-813 sy-vline 
WA_FKKEPOS_PAR_STR-814 sy-vline 
WA_FKKEPOS_PAR_STR-815 sy-vline 
WA_FKKEPOS_PAR_STR-816 sy-vline 
WA_FKKEPOS_PAR_STR-816_BAL sy-vline 
WA_FKKEPOS_PAR_STR-817 sy-vline 
WA_FKKEPOS_PAR_STR-818 sy-vline 
WA_FKKEPOS_PAR_STR-819 sy-vline 
WA_FKKEPOS_PAR_STR-820 sy-vline 
WA_FKKEPOS_PAR_STR-8US sy-vline 
WA_FKKEPOS_PAR_STR-LSTYP sy-vline 
WA_FKKEPOS_PAR_STR-SRVAR sy-vline 
WA_FKKEPOS_PAR_STR-VAROP sy-vline 
WA_FKKEPOS_PAR_STR-SVVAR sy-vline 
WA_FKKEPOS_PAR_STR-BUKRS sy-vline 
WA_FKKEPOS_PAR_STR-VTREF sy-vline 
WA_FKKEPOS_PAR_STR-RATPL sy-vline 
WA_FKKEPOS_PAR_STR-SAMMR sy-vline 
WA_FKKEPOS_PAR_STR-GPART sy-vline 
WA_FKKEPOS_PAR_STR-VKONT sy-vline 
WA_FKKEPOS_PAR_STR-821 sy-vline 
WA_FKKEPOS_PAR_STR-822 sy-vline 
WA_FKKEPOS_PAR_STR-823 sy-vline 
WA_FKKEPOS_PAR_STR-824 sy-vline 
WA_FKKEPOS_PAR_STR-825_OPALL sy-vline 
WA_FKKEPOS_PAR_STR-825_OPTOL sy-vline 
WA_FKKEPOS_PAR_STR-825_RPALL sy-vline 
WA_FKKEPOS_PAR_STR-825_RPTOL sy-vline 
WA_FKKEPOS_PAR_STR-825_CLALL sy-vline 
WA_FKKEPOS_PAR_STR-825_CLTOL sy-vline 
WA_FKKEPOS_PAR_STR-SUBAP sy-vline 
WA_FKKEPOS_PAR_STR-ARCDT sy-vline 
WA_FKKEPOS_PAR_STR-XKONT sy-vline 
WA_FKKEPOS_PAR_STR-826 sy-vline 
WA_FKKEPOS_PAR_STR-FPL9_DOWNP_CHR sy-vline      INTO ld_text SEPARATED BY SPACE.

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