ABAP Select data from SAP table FKK_PV_I_AL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FKK_PV_I_AL 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_PV_I_AL. 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_PV_I_AL 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_PV_I_AL TYPE STANDARD TABLE OF FKK_PV_I_AL,
      WA_FKK_PV_I_AL TYPE FKK_PV_I_AL,
      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_PV_I_AL> TYPE FKK_PV_I_AL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK_PV_I_AL
*  INTO TABLE @DATA(IT_FKK_PV_I_AL2).
*--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_PV_I_AL INDEX 1 INTO DATA(WA_FKK_PV_I_AL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK_PV_I_AL>-VTPOS = 1.
<FKK_PV_I_AL>-VTKEY = 1.
<FKK_PV_I_AL>-GPART = 1.
<FKK_PV_I_AL>-ERDAT = 1.
<FKK_PV_I_AL>-ERTIM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK_PV_I_AL-ERNAM, sy-vline,
  WA_FKK_PV_I_AL-VALFR_I, sy-vline,
  WA_FKK_PV_I_AL-VALTO_I, sy-vline,
  WA_FKK_PV_I_AL-CANCL, sy-vline,
  WA_FKK_PV_I_AL-VTITT, sy-vline,
  WA_FKK_PV_I_AL-VKONT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK_PV_I_AL 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_PV_I_AL 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_PV_I_AL INTO WA_FKK_PV_I_AL.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field SRVRP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_PV_I_AL-SRVRP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_PV_I_AL-SRVRP.
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_PV_I_AL_STR, 
VTPOS TYPE STRING,
VTKEY TYPE STRING,
GPART TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
ERNAM TYPE STRING,
VALFR_I TYPE STRING,
VALTO_I TYPE STRING,
CANCL TYPE STRING,
VTITT TYPE STRING,
VKONT TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
VBER1 TYPE STRING,
VBER2 TYPE STRING,
BUKRS TYPE STRING,
BUKRS_I TYPE STRING,
PRCTR TYPE STRING,
SEGMT TYPE STRING,
STDSP TYPE STRING,
GSBER TYPE STRING,
PRDNR TYPE STRING,
CYCLE TYPE STRING,
CYCLE_DAY TYPE STRING,
CYCLE_DATE TYPE STRING,
VALTO_PRE TYPE STRING,
VTTRG TYPE STRING,
MAPRD TYPE STRING,
SRVRP TYPE STRING,
PTSRL TYPE STRING,
BEGRU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK_PV_I_AL_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_PV_I_AL_STR-VTPOS sy-vline 
WA_FKK_PV_I_AL_STR-VTKEY sy-vline 
WA_FKK_PV_I_AL_STR-GPART sy-vline 
WA_FKK_PV_I_AL_STR-ERDAT sy-vline 
WA_FKK_PV_I_AL_STR-ERTIM sy-vline 
WA_FKK_PV_I_AL_STR-ERNAM sy-vline 
WA_FKK_PV_I_AL_STR-VALFR_I sy-vline 
WA_FKK_PV_I_AL_STR-VALTO_I sy-vline 
WA_FKK_PV_I_AL_STR-CANCL sy-vline 
WA_FKK_PV_I_AL_STR-VTITT sy-vline 
WA_FKK_PV_I_AL_STR-VKONT sy-vline 
WA_FKK_PV_I_AL_STR-VKORG sy-vline 
WA_FKK_PV_I_AL_STR-VTWEG sy-vline 
WA_FKK_PV_I_AL_STR-SPART sy-vline 
WA_FKK_PV_I_AL_STR-VBER1 sy-vline 
WA_FKK_PV_I_AL_STR-VBER2 sy-vline 
WA_FKK_PV_I_AL_STR-BUKRS sy-vline 
WA_FKK_PV_I_AL_STR-BUKRS_I sy-vline 
WA_FKK_PV_I_AL_STR-PRCTR sy-vline 
WA_FKK_PV_I_AL_STR-SEGMT sy-vline 
WA_FKK_PV_I_AL_STR-STDSP sy-vline 
WA_FKK_PV_I_AL_STR-GSBER sy-vline 
WA_FKK_PV_I_AL_STR-PRDNR sy-vline 
WA_FKK_PV_I_AL_STR-CYCLE sy-vline 
WA_FKK_PV_I_AL_STR-CYCLE_DAY sy-vline 
WA_FKK_PV_I_AL_STR-CYCLE_DATE sy-vline 
WA_FKK_PV_I_AL_STR-VALTO_PRE sy-vline 
WA_FKK_PV_I_AL_STR-VTTRG sy-vline 
WA_FKK_PV_I_AL_STR-MAPRD sy-vline 
WA_FKK_PV_I_AL_STR-SRVRP sy-vline 
WA_FKK_PV_I_AL_STR-PTSRL sy-vline 
WA_FKK_PV_I_AL_STR-BEGRU sy-vline      INTO ld_text SEPARATED BY SPACE.

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