ABAP Select data from SAP table FMKF_ALV_REPTERM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMKF_ALV_REPTERM
*  INTO TABLE @DATA(IT_FMKF_ALV_REPTERM2).
*--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_FMKF_ALV_REPTERM INDEX 1 INTO DATA(WA_FMKF_ALV_REPTERM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMKF_ALV_REPTERM>-SORT = 1.
<FMKF_ALV_REPTERM>-ERRTYPE = 1.
<FMKF_ALV_REPTERM>-KEYFIG = 1.
<FMKF_ALV_REPTERM>-DATASOURCE = 1.
<FMKF_ALV_REPTERM>-ORIGIN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMKF_ALV_REPTERM-SIGN, sy-vline,
  WA_FMKF_ALV_REPTERM-WRTTP, sy-vline,
  WA_FMKF_ALV_REPTERM-VORGA, sy-vline,
  WA_FMKF_ALV_REPTERM-SUBVO, sy-vline,
  WA_FMKF_ALV_REPTERM-BTART, sy-vline,
  WA_FMKF_ALV_REPTERM-STATS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMKF_ALV_REPTERM 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_FMKF_ALV_REPTERM 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_FMKF_ALV_REPTERM INTO WA_FMKF_ALV_REPTERM.


*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 RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMKF_ALV_REPTERM-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMKF_ALV_REPTERM-RVERS.
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_FMKF_ALV_REPTERM_STR, 
SORT TYPE STRING,
ERRTYPE TYPE STRING,
KEYFIG TYPE STRING,
DATASOURCE TYPE STRING,
ORIGIN TYPE STRING,
SIGN TYPE STRING,
WRTTP TYPE STRING,
VORGA TYPE STRING,
SUBVO TYPE STRING,
BTART TYPE STRING,
STATS TYPE STRING,
CFLEV TYPE STRING,
GJAHR TYPE STRING,
GNJHR TYPE STRING,
USERDIM TYPE STRING,
VRGNG TYPE STRING,
PERIO TYPE STRING,
CFCNT TYPE STRING,
BLART TYPE STRING,
RVERS TYPE STRING,
CF_FLAG TYPE STRING,
DISTKEY TYPE STRING,
FIELDGROUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMKF_ALV_REPTERM_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_FMKF_ALV_REPTERM_STR-SORT sy-vline 
WA_FMKF_ALV_REPTERM_STR-ERRTYPE sy-vline 
WA_FMKF_ALV_REPTERM_STR-KEYFIG sy-vline 
WA_FMKF_ALV_REPTERM_STR-DATASOURCE sy-vline 
WA_FMKF_ALV_REPTERM_STR-ORIGIN sy-vline 
WA_FMKF_ALV_REPTERM_STR-SIGN sy-vline 
WA_FMKF_ALV_REPTERM_STR-WRTTP sy-vline 
WA_FMKF_ALV_REPTERM_STR-VORGA sy-vline 
WA_FMKF_ALV_REPTERM_STR-SUBVO sy-vline 
WA_FMKF_ALV_REPTERM_STR-BTART sy-vline 
WA_FMKF_ALV_REPTERM_STR-STATS sy-vline 
WA_FMKF_ALV_REPTERM_STR-CFLEV sy-vline 
WA_FMKF_ALV_REPTERM_STR-GJAHR sy-vline 
WA_FMKF_ALV_REPTERM_STR-GNJHR sy-vline 
WA_FMKF_ALV_REPTERM_STR-USERDIM sy-vline 
WA_FMKF_ALV_REPTERM_STR-VRGNG sy-vline 
WA_FMKF_ALV_REPTERM_STR-PERIO sy-vline 
WA_FMKF_ALV_REPTERM_STR-CFCNT sy-vline 
WA_FMKF_ALV_REPTERM_STR-BLART sy-vline 
WA_FMKF_ALV_REPTERM_STR-RVERS sy-vline 
WA_FMKF_ALV_REPTERM_STR-CF_FLAG sy-vline 
WA_FMKF_ALV_REPTERM_STR-DISTKEY sy-vline 
WA_FMKF_ALV_REPTERM_STR-FIELDGROUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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