ABAP Select data from SAP table FMGRPIV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMGRPIV
*  INTO TABLE @DATA(IT_FMGRPIV2).
*--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_FMGRPIV INDEX 1 INTO DATA(WA_FMGRPIV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMGRPIV>-MANDT = 1.
<FMGRPIV>-LFDNR = 1.
<FMGRPIV>-ABGJR = 1.
<FMGRPIV>-GRUPP_NR = 1.
<FMGRPIV>-BEZEICH = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMGRPIV-BEZEICH1, sy-vline,
  WA_FMGRPIV-GRUPPE0, sy-vline,
  WA_FMGRPIV-GRUPPE1, sy-vline,
  WA_FMGRPIV-GRUPPE2, sy-vline,
  WA_FMGRPIV-GRUPPE3, sy-vline,
  WA_FMGRPIV-GRUPPE4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMGRPIV 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_FMGRPIV 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_FMGRPIV INTO WA_FMGRPIV.


*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_FMGRPIV-ABGJR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMGRPIV-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_FMGRPIV_STR, 
MANDT TYPE STRING,
LFDNR TYPE STRING,
ABGJR TYPE STRING,
GRUPP_NR TYPE STRING,
BEZEICH TYPE STRING,
BEZEICH1 TYPE STRING,
GRUPPE0 TYPE STRING,
GRUPPE1 TYPE STRING,
GRUPPE2 TYPE STRING,
GRUPPE3 TYPE STRING,
GRUPPE4 TYPE STRING,
GRUPPE5 TYPE STRING,
GRUPPE6 TYPE STRING,
GRUPPE7 TYPE STRING,
GRUPPE8 TYPE STRING,
GRUPPE9 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMGRPIV_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_FMGRPIV_STR-MANDT sy-vline 
WA_FMGRPIV_STR-LFDNR sy-vline 
WA_FMGRPIV_STR-ABGJR sy-vline 
WA_FMGRPIV_STR-GRUPP_NR sy-vline 
WA_FMGRPIV_STR-BEZEICH sy-vline 
WA_FMGRPIV_STR-BEZEICH1 sy-vline 
WA_FMGRPIV_STR-GRUPPE0 sy-vline 
WA_FMGRPIV_STR-GRUPPE1 sy-vline 
WA_FMGRPIV_STR-GRUPPE2 sy-vline 
WA_FMGRPIV_STR-GRUPPE3 sy-vline 
WA_FMGRPIV_STR-GRUPPE4 sy-vline 
WA_FMGRPIV_STR-GRUPPE5 sy-vline 
WA_FMGRPIV_STR-GRUPPE6 sy-vline 
WA_FMGRPIV_STR-GRUPPE7 sy-vline 
WA_FMGRPIV_STR-GRUPPE8 sy-vline 
WA_FMGRPIV_STR-GRUPPE9 sy-vline      INTO ld_text SEPARATED BY SPACE.

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