ABAP Select data from SAP table FMFUSE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMFUSE
*  INTO TABLE @DATA(IT_FMFUSE2).
*--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_FMFUSE INDEX 1 INTO DATA(WA_FMFUSE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMFUSE>-MANDT = 1.
<FMFUSE>-FIKRS = 1.
<FMFUSE>-FINUSE = 1.
<FMFUSE>-DATAB = 1.
<FMFUSE>-DATBIS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMFUSE-ERFNAME, sy-vline,
  WA_FMFUSE-ERFDAT, sy-vline,
  WA_FMFUSE-AENNAME, sy-vline,
  WA_FMFUSE-AENDAT, sy-vline,
  WA_FMFUSE-DEPT_REG, sy-vline,
  WA_FMFUSE-DEPT_TRAN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMFUSE 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_FMFUSE 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_FMFUSE INTO WA_FMFUSE.


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

*Conversion exit GJAHR, internal->external for field ENDPER
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMFUSE-ENDPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMFUSE-ENDPER.
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_FMFUSE_STR, 
MANDT TYPE STRING,
FIKRS TYPE STRING,
FINUSE TYPE STRING,
DATAB TYPE STRING,
DATBIS TYPE STRING,
ERFNAME TYPE STRING,
ERFDAT TYPE STRING,
AENNAME TYPE STRING,
AENDAT TYPE STRING,
DEPT_REG TYPE STRING,
DEPT_TRAN TYPE STRING,
FISCAL_YR TYPE STRING,
MAIN_ACCT TYPE STRING,
SUB_ACCT TYPE STRING,
SPLIT_NUM TYPE STRING,
FACTSII_REL TYPE STRING,
PREPARERID TYPE STRING,
CERTIFIERID TYPE STRING,
DUMMY_FMAF_INCL_EEW_PS TYPE STRING,
GTAS_REL TYPE STRING,
SUBLEVL TYPE STRING,
AGENCID TYPE STRING,
ALTRAID TYPE STRING,
BEGPER TYPE STRING,
ENDPER TYPE STRING,
AVTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMFUSE_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_FMFUSE_STR-MANDT sy-vline 
WA_FMFUSE_STR-FIKRS sy-vline 
WA_FMFUSE_STR-FINUSE sy-vline 
WA_FMFUSE_STR-DATAB sy-vline 
WA_FMFUSE_STR-DATBIS sy-vline 
WA_FMFUSE_STR-ERFNAME sy-vline 
WA_FMFUSE_STR-ERFDAT sy-vline 
WA_FMFUSE_STR-AENNAME sy-vline 
WA_FMFUSE_STR-AENDAT sy-vline 
WA_FMFUSE_STR-DEPT_REG sy-vline 
WA_FMFUSE_STR-DEPT_TRAN sy-vline 
WA_FMFUSE_STR-FISCAL_YR sy-vline 
WA_FMFUSE_STR-MAIN_ACCT sy-vline 
WA_FMFUSE_STR-SUB_ACCT sy-vline 
WA_FMFUSE_STR-SPLIT_NUM sy-vline 
WA_FMFUSE_STR-FACTSII_REL sy-vline 
WA_FMFUSE_STR-PREPARERID sy-vline 
WA_FMFUSE_STR-CERTIFIERID sy-vline 
WA_FMFUSE_STR-DUMMY_FMAF_INCL_EEW_PS sy-vline 
WA_FMFUSE_STR-GTAS_REL sy-vline 
WA_FMFUSE_STR-SUBLEVL sy-vline 
WA_FMFUSE_STR-AGENCID sy-vline 
WA_FMFUSE_STR-ALTRAID sy-vline 
WA_FMFUSE_STR-BEGPER sy-vline 
WA_FMFUSE_STR-ENDPER sy-vline 
WA_FMFUSE_STR-AVTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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