ABAP Select data from SAP table FMGRUP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMGRUP
*  INTO TABLE @DATA(IT_FMGRUP2).
*--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_FMGRUP INDEX 1 INTO DATA(WA_FMGRUP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMGRUP>-MANDT = 1.
<FMGRUP>-ABGJR = 1.
<FMGRUP>-UGRUPPE0 = 1.
<FMGRUP>-GRP_NR = 1.
<FMGRUP>-BEZEICH = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMGRUP-BEZEICH1, sy-vline,
  WA_FMGRUP-UGRUPPE1, sy-vline,
  WA_FMGRUP-UGRUPPE2, sy-vline,
  WA_FMGRUP-UGRUPPE3, sy-vline,
  WA_FMGRUP-UGRUPPE4, sy-vline,
  WA_FMGRUP-UGRUPPE5, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMGRUP 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_FMGRUP 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_FMGRUP INTO WA_FMGRUP.


*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 ABGJR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMGRUP-ABGJR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMGRUP-ABGJR.
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_FMGRUP_STR, 
MANDT TYPE STRING,
ABGJR TYPE STRING,
UGRUPPE0 TYPE STRING,
GRP_NR TYPE STRING,
BEZEICH TYPE STRING,
BEZEICH1 TYPE STRING,
UGRUPPE1 TYPE STRING,
UGRUPPE2 TYPE STRING,
UGRUPPE3 TYPE STRING,
UGRUPPE4 TYPE STRING,
UGRUPPE5 TYPE STRING,
UGRUPPE6 TYPE STRING,
UGRUPPE7 TYPE STRING,
UGRUPPE8 TYPE STRING,
UGRUPPE9 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMGRUP_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_FMGRUP_STR-MANDT sy-vline 
WA_FMGRUP_STR-ABGJR sy-vline 
WA_FMGRUP_STR-UGRUPPE0 sy-vline 
WA_FMGRUP_STR-GRP_NR sy-vline 
WA_FMGRUP_STR-BEZEICH sy-vline 
WA_FMGRUP_STR-BEZEICH1 sy-vline 
WA_FMGRUP_STR-UGRUPPE1 sy-vline 
WA_FMGRUP_STR-UGRUPPE2 sy-vline 
WA_FMGRUP_STR-UGRUPPE3 sy-vline 
WA_FMGRUP_STR-UGRUPPE4 sy-vline 
WA_FMGRUP_STR-UGRUPPE5 sy-vline 
WA_FMGRUP_STR-UGRUPPE6 sy-vline 
WA_FMGRUP_STR-UGRUPPE7 sy-vline 
WA_FMGRUP_STR-UGRUPPE8 sy-vline 
WA_FMGRUP_STR-UGRUPPE9 sy-vline      INTO ld_text SEPARATED BY SPACE.

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