ABAP Select data from SAP table FDM1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FDM1 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 FDM1. 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 FDM1 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_FDM1 TYPE STANDARD TABLE OF FDM1,
      WA_FDM1 TYPE FDM1,
      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: <FDM1> TYPE FDM1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FDM1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FDM1
  INTO TABLE IT_FDM1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FDM1
*  INTO TABLE @DATA(IT_FDM12).
*--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_FDM1 INDEX 1 INTO DATA(WA_FDM12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FDM1 ASSIGNING <FDM1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FDM1>-MANDT = 1.
<FDM1>-BLTYP = 1.
<FDM1>-RFTYP = 1.
<FDM1>-EBELN = 1.
<FDM1>-RFORG = 1.

ENDLOOP.

LOOP AT IT_FDM1 INTO WA_FDM1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FDM1-RFSYS, sy-vline,
  WA_FDM1-EBELP, sy-vline,
  WA_FDM1-ZEKKN, sy-vline,
  WA_FDM1-ETENR, sy-vline,
  WA_FDM1-STUNR, sy-vline,
  WA_FDM1-ZAEHK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FDM1 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_FDM1 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_FDM1 INTO WA_FDM1.


*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 EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FDM1-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDM1-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RFSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FDM1-RFSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDM1-RFSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FDGRP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FDM1-FDGRP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDM1-FDGRP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field FDWBT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_FDM1-FDWBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDM1-FDWBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field FDDBT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_FDM1-FDDBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDM1-FDDBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FDM1-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDM1-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FDM1-GRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDM1-GRANT_NBR.
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_FDM1_STR, 
MANDT TYPE STRING,
BLTYP TYPE STRING,
RFTYP TYPE STRING,
EBELN TYPE STRING,
RFORG TYPE STRING,
RFSYS TYPE STRING,
EBELP TYPE STRING,
ZEKKN TYPE STRING,
ETENR TYPE STRING,
STUNR TYPE STRING,
ZAEHK TYPE STRING,
BUKRS TYPE STRING,
FDGRP TYPE STRING,
FDLEV TYPE STRING,
CURRD TYPE STRING,
FDTAG TYPE STRING,
GSBER TYPE STRING,
FDWBT TYPE STRING,
FDDBT TYPE STRING,
LIFNR TYPE STRING,
BSTYP TYPE STRING,
GEBER TYPE STRING,
GRANT_NBR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FDM1_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_FDM1_STR-MANDT sy-vline 
WA_FDM1_STR-BLTYP sy-vline 
WA_FDM1_STR-RFTYP sy-vline 
WA_FDM1_STR-EBELN sy-vline 
WA_FDM1_STR-RFORG sy-vline 
WA_FDM1_STR-RFSYS sy-vline 
WA_FDM1_STR-EBELP sy-vline 
WA_FDM1_STR-ZEKKN sy-vline 
WA_FDM1_STR-ETENR sy-vline 
WA_FDM1_STR-STUNR sy-vline 
WA_FDM1_STR-ZAEHK sy-vline 
WA_FDM1_STR-BUKRS sy-vline 
WA_FDM1_STR-FDGRP sy-vline 
WA_FDM1_STR-FDLEV sy-vline 
WA_FDM1_STR-CURRD sy-vline 
WA_FDM1_STR-FDTAG sy-vline 
WA_FDM1_STR-GSBER sy-vline 
WA_FDM1_STR-FDWBT sy-vline 
WA_FDM1_STR-FDDBT sy-vline 
WA_FDM1_STR-LIFNR sy-vline 
WA_FDM1_STR-BSTYP sy-vline 
WA_FDM1_STR-GEBER sy-vline 
WA_FDM1_STR-GRANT_NBR sy-vline      INTO ld_text SEPARATED BY SPACE.

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