ABAP Select data from SAP table FMFG_DC_LEDGER_FM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMFG_DC_LEDGER_FM
*  INTO TABLE @DATA(IT_FMFG_DC_LEDGER_FM2).
*--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_FMFG_DC_LEDGER_FM INDEX 1 INTO DATA(WA_FMFG_DC_LEDGER_FM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMFG_DC_LEDGER_FM>-REFBN = 1.
<FMFG_DC_LEDGER_FM>-REFBT = 1.
<FMFG_DC_LEDGER_FM>-RFORG = 1.
<FMFG_DC_LEDGER_FM>-RFPOS = 1.
<FMFG_DC_LEDGER_FM>-RFKNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMFG_DC_LEDGER_FM-RFTYP, sy-vline,
  WA_FMFG_DC_LEDGER_FM-RFSYS, sy-vline,
  WA_FMFG_DC_LEDGER_FM-FMBELNR, sy-vline,
  WA_FMFG_DC_LEDGER_FM-BTART, sy-vline,
  WA_FMFG_DC_LEDGER_FM-RLDNR, sy-vline,
  WA_FMFG_DC_LEDGER_FM-GJAHR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMFG_DC_LEDGER_FM 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_FMFG_DC_LEDGER_FM 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_FMFG_DC_LEDGER_FM INTO WA_FMFG_DC_LEDGER_FM.


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

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

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

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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMFG_DC_LEDGER_FM-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMFG_DC_LEDGER_FM-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GNJHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMFG_DC_LEDGER_FM-GNJHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMFG_DC_LEDGER_FM-GNJHR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit GJAHR, internal->external for field VOGJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMFG_DC_LEDGER_FM-VOGJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMFG_DC_LEDGER_FM-VOGJAHR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field KNGJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMFG_DC_LEDGER_FM-KNGJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMFG_DC_LEDGER_FM-KNGJAHR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FMFG_DC_LEDGER_FM-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMFG_DC_LEDGER_FM-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBUND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMFG_DC_LEDGER_FM-VBUND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMFG_DC_LEDGER_FM-VBUND.
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_FMFG_DC_LEDGER_FM_STR, 
REFBN TYPE STRING,
REFBT TYPE STRING,
RFORG TYPE STRING,
RFPOS TYPE STRING,
RFKNT TYPE STRING,
RFTYP TYPE STRING,
RFSYS TYPE STRING,
FMBELNR TYPE STRING,
BTART TYPE STRING,
RLDNR TYPE STRING,
GJAHR TYPE STRING,
STUNR TYPE STRING,
ZHLDT TYPE STRING,
GNJHR TYPE STRING,
PERIO TYPE STRING,
CFSTAT TYPE STRING,
CFSTATSV TYPE STRING,
CFCNT TYPE STRING,
OBJNRZ TYPE STRING,
TRBTR TYPE STRING,
FKBTR TYPE STRING,
FISTL TYPE STRING,
FONDS TYPE STRING,
FIPEX TYPE STRING,
FAREA TYPE STRING,
MEASURE TYPE STRING,
GRANT_NBR TYPE STRING,
BUS_AREA TYPE STRING,
PRCTR TYPE STRING,
WRTTP TYPE STRING,
VRGNG TYPE STRING,
BUKRS TYPE STRING,
STATS TYPE STRING,
TWAER TYPE STRING,
CFLEV TYPE STRING,
SGTXT TYPE STRING,
TRANR TYPE STRING,
CTRNR TYPE STRING,
USERDIM TYPE STRING,
DUMMY_INCL_EEW_COBL TYPE STRING,
FMVOR TYPE STRING,
BUDGET_PD TYPE STRING,
VREFBT TYPE STRING,
VREFBN TYPE STRING,
VRFORG TYPE STRING,
VRFPOS TYPE STRING,
VRFKNT TYPE STRING,
VRFTYP TYPE STRING,
VRFSYS TYPE STRING,
HKONT TYPE STRING,
VOBUKRS TYPE STRING,
VOGJAHR TYPE STRING,
VOBELNR TYPE STRING,
VOBUZEI TYPE STRING,
KNGJAHR TYPE STRING,
KNBELNR TYPE STRING,
KNBUZEI TYPE STRING,
SKNTO TYPE STRING,
RDIFF TYPE STRING,
PAYFLG TYPE STRING,
PSOBT TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
VBUND TYPE STRING,
XREF3 TYPE STRING,
PUMETH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMFG_DC_LEDGER_FM_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_FMFG_DC_LEDGER_FM_STR-REFBN sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-REFBT sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-RFORG sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-RFPOS sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-RFKNT sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-RFTYP sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-RFSYS sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-FMBELNR sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-BTART sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-RLDNR sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-GJAHR sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-STUNR sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-ZHLDT sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-GNJHR sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-PERIO sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-CFSTAT sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-CFSTATSV sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-CFCNT sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-OBJNRZ sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-TRBTR sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-FKBTR sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-FISTL sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-FONDS sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-FIPEX sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-FAREA sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-MEASURE sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-GRANT_NBR sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-BUS_AREA sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-PRCTR sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-WRTTP sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-VRGNG sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-BUKRS sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-STATS sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-TWAER sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-CFLEV sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-SGTXT sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-TRANR sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-CTRNR sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-USERDIM sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-DUMMY_INCL_EEW_COBL sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-FMVOR sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-BUDGET_PD sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-VREFBT sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-VREFBN sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-VRFORG sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-VRFPOS sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-VRFKNT sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-VRFTYP sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-VRFSYS sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-HKONT sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-VOBUKRS sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-VOGJAHR sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-VOBELNR sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-VOBUZEI sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-KNGJAHR sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-KNBELNR sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-KNBUZEI sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-SKNTO sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-RDIFF sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-PAYFLG sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-PSOBT sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-MENGE sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-MEINS sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-VBUND sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-XREF3 sy-vline 
WA_FMFG_DC_LEDGER_FM_STR-PUMETH sy-vline      INTO ld_text SEPARATED BY SPACE.

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