ABAP Select data from SAP table FKK_DOCB_ITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FKK_DOCB_ITEM 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_DOCB_ITEM. 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_DOCB_ITEM 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_DOCB_ITEM TYPE STANDARD TABLE OF FKK_DOCB_ITEM,
      WA_FKK_DOCB_ITEM TYPE FKK_DOCB_ITEM,
      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_DOCB_ITEM> TYPE FKK_DOCB_ITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK_DOCB_ITEM
*  INTO TABLE @DATA(IT_FKK_DOCB_ITEM2).
*--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_DOCB_ITEM INDEX 1 INTO DATA(WA_FKK_DOCB_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK_DOCB_ITEM>-MANDT = 1.
<FKK_DOCB_ITEM>-OPUPK = 1.
<FKK_DOCB_ITEM>-BUKRS = 1.
<FKK_DOCB_ITEM>-GSBER = 1.
<FKK_DOCB_ITEM>-BUPLA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK_DOCB_ITEM-SEGMENT, sy-vline,
  WA_FKK_DOCB_ITEM-PRCTR, sy-vline,
  WA_FKK_DOCB_ITEM-GPART, sy-vline,
  WA_FKK_DOCB_ITEM-VTREF, sy-vline,
  WA_FKK_DOCB_ITEM-VTRE2, sy-vline,
  WA_FKK_DOCB_ITEM-VKONT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK_DOCB_ITEM 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_DOCB_ITEM 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_DOCB_ITEM INTO WA_FKK_DOCB_ITEM.


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

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

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

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

*Conversion exit ALPHA, internal->external for field VTRE2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_DOCB_ITEM-VTRE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_DOCB_ITEM-VTRE2.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit EXCRT, internal->external for field KURSF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_FKK_DOCB_ITEM-KURSF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_DOCB_ITEM-KURSF.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CFOBR, internal->external for field CFOPN
CALL FUNCTION 'CONVERSION_EXIT_CFOBR_OUTPUT'
  EXPORTING
    input =                      WA_FKK_DOCB_ITEM-CFOPN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_DOCB_ITEM-CFOPN.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit FMCIL, internal->external for field FIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_FKK_DOCB_ITEM-FIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_DOCB_ITEM-FIPEX.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field BUDGETYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FKK_DOCB_ITEM-BUDGETYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_DOCB_ITEM-BUDGETYEAR.
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_DOCB_ITEM_STR, 
MANDT TYPE STRING,
OPUPK TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
BUPLA TYPE STRING,
SEGMENT TYPE STRING,
PRCTR TYPE STRING,
GPART TYPE STRING,
VTREF TYPE STRING,
VTRE2 TYPE STRING,
VKONT TYPE STRING,
APPLK TYPE STRING,
HVORG TYPE STRING,
TVORG TYPE STRING,
MWSKZ TYPE STRING,
MWSZKZ TYPE STRING,
STAKZ TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
OPTXT TYPE STRING,
WAERS TYPE STRING,
FAEDN TYPE STRING,
FAEDS TYPE STRING,
VERKZ TYPE STRING,
STUDT TYPE STRING,
SKTPZ TYPE STRING,
KURSF TYPE STRING,
BETRW TYPE STRING,
PYMET TYPE STRING,
PYBUK TYPE STRING,
GRKEY TYPE STRING,
PERSL TYPE STRING,
XEIPH TYPE STRING,
ABRZU TYPE STRING,
ABRZO TYPE STRING,
AUGRS TYPE STRING,
PYGRP TYPE STRING,
TXJCD TYPE STRING,
TXDAT TYPE STRING,
VBUND TYPE STRING,
EMGPA TYPE STRING,
EMBVT TYPE STRING,
EMADR TYPE STRING,
STRKZ TYPE STRING,
LANDL TYPE STRING,
CFOPN TYPE STRING,
SUBAP TYPE STRING,
PSGRP TYPE STRING,
FINRE TYPE STRING,
RDSTA TYPE STRING,
RDSTB TYPE STRING,
FMTYP TYPE STRING,
ORIGFIKRS TYPE STRING,
FIPEX TYPE STRING,
FISTL TYPE STRING,
FONDS TYPE STRING,
FKBER TYPE STRING,
MEASURE TYPE STRING,
GRANT_NBR TYPE STRING,
BUDGETYEAR TYPE STRING,
BUDGET_PD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK_DOCB_ITEM_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_DOCB_ITEM_STR-MANDT sy-vline 
WA_FKK_DOCB_ITEM_STR-OPUPK sy-vline 
WA_FKK_DOCB_ITEM_STR-BUKRS sy-vline 
WA_FKK_DOCB_ITEM_STR-GSBER sy-vline 
WA_FKK_DOCB_ITEM_STR-BUPLA sy-vline 
WA_FKK_DOCB_ITEM_STR-SEGMENT sy-vline 
WA_FKK_DOCB_ITEM_STR-PRCTR sy-vline 
WA_FKK_DOCB_ITEM_STR-GPART sy-vline 
WA_FKK_DOCB_ITEM_STR-VTREF sy-vline 
WA_FKK_DOCB_ITEM_STR-VTRE2 sy-vline 
WA_FKK_DOCB_ITEM_STR-VKONT sy-vline 
WA_FKK_DOCB_ITEM_STR-APPLK sy-vline 
WA_FKK_DOCB_ITEM_STR-HVORG sy-vline 
WA_FKK_DOCB_ITEM_STR-TVORG sy-vline 
WA_FKK_DOCB_ITEM_STR-MWSKZ sy-vline 
WA_FKK_DOCB_ITEM_STR-MWSZKZ sy-vline 
WA_FKK_DOCB_ITEM_STR-STAKZ sy-vline 
WA_FKK_DOCB_ITEM_STR-BLDAT sy-vline 
WA_FKK_DOCB_ITEM_STR-BUDAT sy-vline 
WA_FKK_DOCB_ITEM_STR-OPTXT sy-vline 
WA_FKK_DOCB_ITEM_STR-WAERS sy-vline 
WA_FKK_DOCB_ITEM_STR-FAEDN sy-vline 
WA_FKK_DOCB_ITEM_STR-FAEDS sy-vline 
WA_FKK_DOCB_ITEM_STR-VERKZ sy-vline 
WA_FKK_DOCB_ITEM_STR-STUDT sy-vline 
WA_FKK_DOCB_ITEM_STR-SKTPZ sy-vline 
WA_FKK_DOCB_ITEM_STR-KURSF sy-vline 
WA_FKK_DOCB_ITEM_STR-BETRW sy-vline 
WA_FKK_DOCB_ITEM_STR-PYMET sy-vline 
WA_FKK_DOCB_ITEM_STR-PYBUK sy-vline 
WA_FKK_DOCB_ITEM_STR-GRKEY sy-vline 
WA_FKK_DOCB_ITEM_STR-PERSL sy-vline 
WA_FKK_DOCB_ITEM_STR-XEIPH sy-vline 
WA_FKK_DOCB_ITEM_STR-ABRZU sy-vline 
WA_FKK_DOCB_ITEM_STR-ABRZO sy-vline 
WA_FKK_DOCB_ITEM_STR-AUGRS sy-vline 
WA_FKK_DOCB_ITEM_STR-PYGRP sy-vline 
WA_FKK_DOCB_ITEM_STR-TXJCD sy-vline 
WA_FKK_DOCB_ITEM_STR-TXDAT sy-vline 
WA_FKK_DOCB_ITEM_STR-VBUND sy-vline 
WA_FKK_DOCB_ITEM_STR-EMGPA sy-vline 
WA_FKK_DOCB_ITEM_STR-EMBVT sy-vline 
WA_FKK_DOCB_ITEM_STR-EMADR sy-vline 
WA_FKK_DOCB_ITEM_STR-STRKZ sy-vline 
WA_FKK_DOCB_ITEM_STR-LANDL sy-vline 
WA_FKK_DOCB_ITEM_STR-CFOPN sy-vline 
WA_FKK_DOCB_ITEM_STR-SUBAP sy-vline 
WA_FKK_DOCB_ITEM_STR-PSGRP sy-vline 
WA_FKK_DOCB_ITEM_STR-FINRE sy-vline 
WA_FKK_DOCB_ITEM_STR-RDSTA sy-vline 
WA_FKK_DOCB_ITEM_STR-RDSTB sy-vline 
WA_FKK_DOCB_ITEM_STR-FMTYP sy-vline 
WA_FKK_DOCB_ITEM_STR-ORIGFIKRS sy-vline 
WA_FKK_DOCB_ITEM_STR-FIPEX sy-vline 
WA_FKK_DOCB_ITEM_STR-FISTL sy-vline 
WA_FKK_DOCB_ITEM_STR-FONDS sy-vline 
WA_FKK_DOCB_ITEM_STR-FKBER sy-vline 
WA_FKK_DOCB_ITEM_STR-MEASURE sy-vline 
WA_FKK_DOCB_ITEM_STR-GRANT_NBR sy-vline 
WA_FKK_DOCB_ITEM_STR-BUDGETYEAR sy-vline 
WA_FKK_DOCB_ITEM_STR-BUDGET_PD sy-vline      INTO ld_text SEPARATED BY SPACE.

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