ABAP Select data from SAP table FKKFA_FA_LINK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKFA_FA_LINK
*  INTO TABLE @DATA(IT_FKKFA_FA_LINK2).
*--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_FKKFA_FA_LINK INDEX 1 INTO DATA(WA_FKKFA_FA_LINK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKFA_FA_LINK>-MANDT = 1.
<FKKFA_FA_LINK>-OPBEL = 1.
<FKKFA_FA_LINK>-OPUPW = 1.
<FKKFA_FA_LINK>-OPUPK = 1.
<FKKFA_FA_LINK>-OPUPF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKFA_FA_LINK-FACTC, sy-vline,
  WA_FKKFA_FA_LINK-FASTA, sy-vline,
  WA_FKKFA_FA_LINK-FAPRP, sy-vline,
  WA_FKKFA_FA_LINK-FAPAP, sy-vline,
  WA_FKKFA_FA_LINK-BUKRS, sy-vline,
  WA_FKKFA_FA_LINK-GPART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKFA_FA_LINK 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_FKKFA_FA_LINK 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_FKKFA_FA_LINK INTO WA_FKKFA_FA_LINK.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field OPBEL_OLD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKFA_FA_LINK-OPBEL_OLD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKFA_FA_LINK-OPBEL_OLD.
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_FKKFA_FA_LINK_STR, 
MANDT TYPE STRING,
OPBEL TYPE STRING,
OPUPW TYPE STRING,
OPUPK TYPE STRING,
OPUPF TYPE STRING,
FACTC TYPE STRING,
FASTA TYPE STRING,
FAPRP TYPE STRING,
FAPAP TYPE STRING,
BUKRS TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
VTREF TYPE STRING,
SUBAP TYPE STRING,
BETRW TYPE STRING,
WAERS TYPE STRING,
BETRZ TYPE STRING,
WRAMT TYPE STRING,
RVAMT TYPE STRING,
RTAMT TYPE STRING,
BETRW_POST TYPE STRING,
BETRP_POST TYPE STRING,
BETRZ_POST TYPE STRING,
WRAMT_POST TYPE STRING,
RVAMT_POST TYPE STRING,
RPAMT_POST TYPE STRING,
RTAMT_POST TYPE STRING,
LAUFD_OFF TYPE STRING,
LAUFI_OFF TYPE STRING,
ERNAM_OFF TYPE STRING,
ERDAT_OFF TYPE STRING,
ERTIM_OFF TYPE STRING,
LAUFD_PRA TYPE STRING,
LAUFI_PRA TYPE STRING,
ERNAM_PRA TYPE STRING,
ERDAT_PRA TYPE STRING,
ERTIM_PRA TYPE STRING,
OPBEL_PRA TYPE STRING,
LAUFD_REV TYPE STRING,
LAUFI_REV TYPE STRING,
ERNAM_REV TYPE STRING,
ERDAT_REV TYPE STRING,
ERTIM_REV TYPE STRING,
REASN_REV TYPE STRING,
OPBEL_OLD TYPE STRING,
OPUPW_OLD TYPE STRING,
OPUPK_OLD TYPE STRING,
OPUPF_OLD TYPE STRING,
REASN_ANSWER TYPE STRING,
BETRZ_OLD TYPE STRING,
WRAMT_OLD TYPE STRING,
RVAMT_OLD TYPE STRING,
BETRZ_POST_ACT TYPE STRING,
WRAMT_POST_ACT TYPE STRING,
RVAMT_POST_ACT TYPE STRING,
RPAMT_POST_ACT TYPE STRING,
BETRZ_POST_OLD TYPE STRING,
WRAMT_POST_OLD TYPE STRING,
RVAMT_POST_OLD TYPE STRING,
RPAMT_POST_OLD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKFA_FA_LINK_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_FKKFA_FA_LINK_STR-MANDT sy-vline 
WA_FKKFA_FA_LINK_STR-OPBEL sy-vline 
WA_FKKFA_FA_LINK_STR-OPUPW sy-vline 
WA_FKKFA_FA_LINK_STR-OPUPK sy-vline 
WA_FKKFA_FA_LINK_STR-OPUPF sy-vline 
WA_FKKFA_FA_LINK_STR-FACTC sy-vline 
WA_FKKFA_FA_LINK_STR-FASTA sy-vline 
WA_FKKFA_FA_LINK_STR-FAPRP sy-vline 
WA_FKKFA_FA_LINK_STR-FAPAP sy-vline 
WA_FKKFA_FA_LINK_STR-BUKRS sy-vline 
WA_FKKFA_FA_LINK_STR-GPART sy-vline 
WA_FKKFA_FA_LINK_STR-VKONT sy-vline 
WA_FKKFA_FA_LINK_STR-VTREF sy-vline 
WA_FKKFA_FA_LINK_STR-SUBAP sy-vline 
WA_FKKFA_FA_LINK_STR-BETRW sy-vline 
WA_FKKFA_FA_LINK_STR-WAERS sy-vline 
WA_FKKFA_FA_LINK_STR-BETRZ sy-vline 
WA_FKKFA_FA_LINK_STR-WRAMT sy-vline 
WA_FKKFA_FA_LINK_STR-RVAMT sy-vline 
WA_FKKFA_FA_LINK_STR-RTAMT sy-vline 
WA_FKKFA_FA_LINK_STR-BETRW_POST sy-vline 
WA_FKKFA_FA_LINK_STR-BETRP_POST sy-vline 
WA_FKKFA_FA_LINK_STR-BETRZ_POST sy-vline 
WA_FKKFA_FA_LINK_STR-WRAMT_POST sy-vline 
WA_FKKFA_FA_LINK_STR-RVAMT_POST sy-vline 
WA_FKKFA_FA_LINK_STR-RPAMT_POST sy-vline 
WA_FKKFA_FA_LINK_STR-RTAMT_POST sy-vline 
WA_FKKFA_FA_LINK_STR-LAUFD_OFF sy-vline 
WA_FKKFA_FA_LINK_STR-LAUFI_OFF sy-vline 
WA_FKKFA_FA_LINK_STR-ERNAM_OFF sy-vline 
WA_FKKFA_FA_LINK_STR-ERDAT_OFF sy-vline 
WA_FKKFA_FA_LINK_STR-ERTIM_OFF sy-vline 
WA_FKKFA_FA_LINK_STR-LAUFD_PRA sy-vline 
WA_FKKFA_FA_LINK_STR-LAUFI_PRA sy-vline 
WA_FKKFA_FA_LINK_STR-ERNAM_PRA sy-vline 
WA_FKKFA_FA_LINK_STR-ERDAT_PRA sy-vline 
WA_FKKFA_FA_LINK_STR-ERTIM_PRA sy-vline 
WA_FKKFA_FA_LINK_STR-OPBEL_PRA sy-vline 
WA_FKKFA_FA_LINK_STR-LAUFD_REV sy-vline 
WA_FKKFA_FA_LINK_STR-LAUFI_REV sy-vline 
WA_FKKFA_FA_LINK_STR-ERNAM_REV sy-vline 
WA_FKKFA_FA_LINK_STR-ERDAT_REV sy-vline 
WA_FKKFA_FA_LINK_STR-ERTIM_REV sy-vline 
WA_FKKFA_FA_LINK_STR-REASN_REV sy-vline 
WA_FKKFA_FA_LINK_STR-OPBEL_OLD sy-vline 
WA_FKKFA_FA_LINK_STR-OPUPW_OLD sy-vline 
WA_FKKFA_FA_LINK_STR-OPUPK_OLD sy-vline 
WA_FKKFA_FA_LINK_STR-OPUPF_OLD sy-vline 
WA_FKKFA_FA_LINK_STR-REASN_ANSWER sy-vline 
WA_FKKFA_FA_LINK_STR-BETRZ_OLD sy-vline 
WA_FKKFA_FA_LINK_STR-WRAMT_OLD sy-vline 
WA_FKKFA_FA_LINK_STR-RVAMT_OLD sy-vline 
WA_FKKFA_FA_LINK_STR-BETRZ_POST_ACT sy-vline 
WA_FKKFA_FA_LINK_STR-WRAMT_POST_ACT sy-vline 
WA_FKKFA_FA_LINK_STR-RVAMT_POST_ACT sy-vline 
WA_FKKFA_FA_LINK_STR-RPAMT_POST_ACT sy-vline 
WA_FKKFA_FA_LINK_STR-BETRZ_POST_OLD sy-vline 
WA_FKKFA_FA_LINK_STR-WRAMT_POST_OLD sy-vline 
WA_FKKFA_FA_LINK_STR-RVAMT_POST_OLD sy-vline 
WA_FKKFA_FA_LINK_STR-RPAMT_POST_OLD sy-vline      INTO ld_text SEPARATED BY SPACE.

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